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The First Life Forms on Earth - Eoarchean Earth - 3.8 billion years ago, 770 million years after the formation of the Earth, the first life forms appeared as a unicellular organism. Bacteries and archeobacteries (archaea) began to populate the Earth's surface while the atmosphere was still filled with volcanic gases and probably without oxygen. In this illustration, these micro-organisms came out of the ocean to attach themselves to the rock remains of a caldera, bringing colour to this monochrome landscape. 770 million years after the formation of the Earth - - 3.8 billion years ago - - the first life may have appeared in the form of simple, single - celled organisms. Bacteria and archaea may have even found a way to populate the otherwise sterile and inhospitable surface. The atmosphere would likely have consisted solely of gases vented by volcanoes: carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen, methane, hydrogen, methane, ammonia, and water vapor. In this image, a varie

The First Life Forms on Earth - Eoarchean Earth - 3.8 billion years ago, 770 million years after the formation of the Earth, the first life forms appeared as a unicellular organism. Bacteries and archeobacteries (archaea) began to populate the Earth's surface while the atmosphere was still filled with volcanic gases and probably without oxygen. In this illustration, these micro-organisms came out of the ocean to attach themselves to the rock remains of a caldera, bringing colour to this monochrome landscape. 770 million years after the formation of the Earth - - 3.8 billion years ago - - the first life may have appeared in the form of simple, single - celled organisms. Bacteria and archaea may have even found a way to populate the otherwise sterile and inhospitable surface. The atmosphere would likely have consisted solely of gases vented by volcanoes: carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen, methane, hydrogen, methane, ammonia, and water vapor. In this image, a varie

Walter B Myers

PIX4632742

Comets have the origin of water on Earth - Artist's view - Origin of water: Artist's view of Earth bombed by comets 4 billion years ago. Comets could be the source of water on Earth. Impacting comets may have brought water to the early Earth

Comets have the origin of water on Earth - Artist's view - Origin of water: Artist's view of Earth bombed by comets 4 billion years ago. Comets could be the source of water on Earth. Impacting comets may have brought water to the early Earth

Miller, Ron (b.1947)

PIX4669365

Pteraspis Backlight - View of Pteraspis artist swimming in the sea 410 million years ago. Two jawless fish of the genus Pteraspis feed near the ocean's surface 410 million years ago during the Early Devonian. Pteraspis grew to a length of about 8 inches and is believed to have dined on shoals of plankton. A hard shell and spikes may have helped protect Pteraspis from larger predators

Pteraspis Backlight - View of Pteraspis artist swimming in the sea 410 million years ago. Two jawless fish of the genus Pteraspis feed near the ocean's surface 410 million years ago during the Early Devonian. Pteraspis grew to a length of about 8 inches and is believed to have dined on shoals of plankton. A hard shell and spikes may have helped protect Pteraspis from larger predators

Walter B Myers

PIX4661625

Vie sur terre primitive - Vue d'artiste - Life appears on early Earth - Artist view: Vue d'artiste de la terre primitive à precambrian et de la formation des formes d'vie premier sur l'terre sur l'terre. The formation of life on early Earth

Vie sur terre primitive - Vue d'artiste - Life appears on early Earth - Artist view: Vue d'artiste de la terre primitive à precambrian et de la formation des formes d'vie premier sur l'terre sur l'terre. The formation of life on early Earth

Miller, Ron (b.1947)

PIX4669335

Comets have the origin of life on Earth - Comets bring life on Earth - An artist's view of the Earth bombed by comets 4 billion years ago. Comets may have brought the molecules necessary for the appearance of life on Earth. The Moon at that time was much closer to Earth than today. Impacting comets may have brought life to the early Earth. 4 billion years ago, Moon was closer than today

Comets have the origin of life on Earth - Comets bring life on Earth - An artist's view of the Earth bombed by comets 4 billion years ago. Comets may have brought the molecules necessary for the appearance of life on Earth. The Moon at that time was much closer to Earth than today. Impacting comets may have brought life to the early Earth. 4 billion years ago, Moon was closer than today

PIX4632636

First plants on Earth - Artist view - First plants - Artist view - Artist view - Artist view of the first plants (Cooksonia caledonica) that appeared on Earth in Silurian more than 400 million years ago. Species of Cooksonia caledonica, the only witness to a spectacular Late Silurian sunset, establish a tenuous foothold on a mound of ancient lava. 600 million years ago the Earth's oceans were teaming with life, however it wasn't until 200 million years later that the first plants emerged from the waters and made the Earth's surface their home. They were simple plants, standing only a few inches tall, consisting of slender stalks with branches and rounded structures called sporangia. The sporangia, common to funguses and non - seed plants, produced and contained the spores required for reproduction

First plants on Earth - Artist view - First plants - Artist view - Artist view - Artist view of the first plants (Cooksonia caledonica) that appeared on Earth in Silurian more than 400 million years ago. Species of Cooksonia caledonica, the only witness to a spectacular Late Silurian sunset, establish a tenuous foothold on a mound of ancient lava. 600 million years ago the Earth's oceans were teaming with life, however it wasn't until 200 million years later that the first plants emerged from the waters and made the Earth's surface their home. They were simple plants, standing only a few inches tall, consisting of slender stalks with branches and rounded structures called sporangia. The sporangia, common to funguses and non - seed plants, produced and contained the spores required for reproduction

Walter B Myers

PIX4632750

Drepanaspis - Drepanaspis gemuendenensis is an extirpated species of jaw-free fish. He lived in the inferior Devonian. An 8-inch-long primitive jawless fish of the species Drepanaspis gemuendenensis settles on the bottom of a shallow Devonian sea 380 million years ago. With a flat, paddle-shaped head and upwards-facing jawless mouth, Drepanaspis was one of the more unique sea creatures of its time. Based upon its overall shape it is believed to have been a bottom feeder, though it's not known what it would have eaten

Drepanaspis - Drepanaspis gemuendenensis is an extirpated species of jaw-free fish. He lived in the inferior Devonian. An 8-inch-long primitive jawless fish of the species Drepanaspis gemuendenensis settles on the bottom of a shallow Devonian sea 380 million years ago. With a flat, paddle-shaped head and upwards-facing jawless mouth, Drepanaspis was one of the more unique sea creatures of its time. Based upon its overall shape it is believed to have been a bottom feeder, though it's not known what it would have eaten

Walter B Myers

PIX4661623

Peninsule de Snaefellsnes - Iceland - Snaefellsnes peninsula village - Iceland: Small village on the peninsula of Snaefellsnes. March 2016. A very small Icelandic village on the Snaefellsnes peninsula, close to the famous Budir Black Church. March 2016

Peninsule de Snaefellsnes - Iceland - Snaefellsnes peninsula village - Iceland: Small village on the peninsula of Snaefellsnes. March 2016. A very small Icelandic village on the Snaefellsnes peninsula, close to the famous Budir Black Church. March 2016

Alex Tudorica

PIX4666413

Peninsule de Snaefellsnes - Iceland - Sunset in Snaefellsnes - Iceland: Sunset on the Peninsula of Snaefellsnes. March 2016. On the little peninsula that hosts the famous volcano Snaefellsjokull, there are quite a few little lakes. The Black Church of Budir is nearby. March 2016

Peninsule de Snaefellsnes - Iceland - Sunset in Snaefellsnes - Iceland: Sunset on the Peninsula of Snaefellsnes. March 2016. On the little peninsula that hosts the famous volcano Snaefellsjokull, there are quite a few little lakes. The Black Church of Budir is nearby. March 2016

Alex Tudorica

PIX4666412

Devonian Landscape - Asteroxylon swamp - Asteroxylon is a primitive plant that developed in a warm, humid environment at the beginning of Devonian about 400 million years ago. Asteroxylon was a primitive plant that flourished during the Early Devonian period approximately 400 million years ago. It may have grown as tall as 12 feet and lived in warm, humid enviroments

Devonian Landscape - Asteroxylon swamp - Asteroxylon is a primitive plant that developed in a warm, humid environment at the beginning of Devonian about 400 million years ago. Asteroxylon was a primitive plant that flourished during the Early Devonian period approximately 400 million years ago. It may have grown as tall as 12 feet and lived in warm, humid enviroments

Walter B Myers

PIX4632900

Satellite SMOS - Artist view - The SMOS satellite - Artist view - Artist view of the European satellite SMOS (Soil Moisture and Ocean Salinity) in orbit around the Earth. This satellite will perform the first global mapping of soil moisture and ocean salinity. The satellite was launched and put into orbit on 2 November 2009. The Soil Moisture and Ocean Salinity (SMOS) mission make global observations of soil moisture over Earth's landmasses and salinity over the oceans. Variations in soil moisture and ocean salinity are a consequence of the continuous exchange of water between the oceans, the atmosphere and the land - Earth's water cycle. SMOS was launched on November 2, 2009

Satellite SMOS - Artist view - The SMOS satellite - Artist view - Artist view of the European satellite SMOS (Soil Moisture and Ocean Salinity) in orbit around the Earth. This satellite will perform the first global mapping of soil moisture and ocean salinity. The satellite was launched and put into orbit on 2 November 2009. The Soil Moisture and Ocean Salinity (SMOS) mission make global observations of soil moisture over Earth's landmasses and salinity over the oceans. Variations in soil moisture and ocean salinity are a consequence of the continuous exchange of water between the oceans, the atmosphere and the land - Earth's water cycle. SMOS was launched on November 2, 2009

PIX4644198

Centrosaurus - A couple of Centrosaurus apertus try to escape a forest fire at night. Centrosaurus was a Ceratopsian dinosaur. A couple of Centrosaurus apertus flee a predawn forest fire by attempting to cross a flooding river

Centrosaurus - A couple of Centrosaurus apertus try to escape a forest fire at night. Centrosaurus was a Ceratopsian dinosaur. A couple of Centrosaurus apertus flee a predawn forest fire by attempting to cross a flooding river

Julius Csotonyi

PIX4663103

Coelacanthe - Coelacanth portrait - A coelacanth swim in the ancient Tethys Ocean, 390 million years ago. A prehistoric, 130 pound Coelacanth swims the Paleo Tethys Sea 390 million years ago during the Middle Devonian period. Related to lungfishes and tetrapods, Coelacanths were thought to have gone extinct 65 million years ago until a living specimen was found off the east coast of South Africa in 1938

Coelacanthe - Coelacanth portrait - A coelacanth swim in the ancient Tethys Ocean, 390 million years ago. A prehistoric, 130 pound Coelacanth swims the Paleo Tethys Sea 390 million years ago during the Middle Devonian period. Related to lungfishes and tetrapods, Coelacanths were thought to have gone extinct 65 million years ago until a living specimen was found off the east coast of South Africa in 1938

Walter B Myers

PIX4661610

Banks of the Bahamas seen from space - Great Bahamas Bank: Image obtained on 5 February 2014 by the Landsat-8 satellite. Underwater structures of the Great Bahamas Bank are pictured in this image from the Landsat-8 satellite on 5 February 2014. Sitting north of Cuba, the bank is made of limestone - mainly from the skeletal fragments of marine organisms - that has been accumulating for over 100 million years. Currents sculpted these underwater sediments into the wavy pattern we see along the bottom of the image, just a few meters deep. We can clearly see where the shallow waters drop off into the deep, dark water of an area known as the Tongue of the Ocean. With depths of up to about 4000 m, this trench surrounded by islands, reefs and shoals has an opening to the Atlantic Ocean at its northern end (not pictured). Over the deep Tongue we can see a few sparse clouds

Banks of the Bahamas seen from space - Great Bahamas Bank: Image obtained on 5 February 2014 by the Landsat-8 satellite. Underwater structures of the Great Bahamas Bank are pictured in this image from the Landsat-8 satellite on 5 February 2014. Sitting north of Cuba, the bank is made of limestone - mainly from the skeletal fragments of marine organisms - that has been accumulating for over 100 million years. Currents sculpted these underwater sediments into the wavy pattern we see along the bottom of the image, just a few meters deep. We can clearly see where the shallow waters drop off into the deep, dark water of an area known as the Tongue of the Ocean. With depths of up to about 4000 m, this trench surrounded by islands, reefs and shoals has an opening to the Atlantic Ocean at its northern end (not pictured). Over the deep Tongue we can see a few sparse clouds

PIX4634059

Ichthyosaurus - Ichthyosaurus (fish body lezard) is a marine reptile living from the early Jurassic in Lower Cretace. Ichthyosaurus is an extinct genus of ichthyosaur from the Early Jurassic

Ichthyosaurus - Ichthyosaurus (fish body lezard) is a marine reptile living from the early Jurassic in Lower Cretace. Ichthyosaurus is an extinct genus of ichthyosaur from the Early Jurassic

Julius Csotonyi

PIX4662175

Dunkleosteus and Cladoselache - Dunkleosteus & Cladoselache - A Dunkleosteus approaches a Cladoselache, the ancestor of sharks. Dunkleosteus, formerly called Dinichthys, is a large fossil placoderm. He lived in the Upper Devonian, between 415 and 360 million years. The largest representatives of the genus were approximately 8-10 m long and weighed around 5 tonnes. These fish were probably the greatest marine predators of their time. A 30-foot-long, four-ton hypercarnivorous apex predator of the species Dunkleosteus terrellix is about to make a meal of a six-foot-long primitive shark of the genus Cladoselache 370 million years ago in the Rheic Ocean near what is today North America. Dunkleosteus terrellix was one of the largest arthrodire placoderms ever to have lived. Almost as long as a school bus, It was heavily armored and therefore likely a relatively slow, but powerful swimmer. There are four Cladoselache/primitive sharks in this image. The schooling fish are generic representativ

Dunkleosteus and Cladoselache - Dunkleosteus & Cladoselache - A Dunkleosteus approaches a Cladoselache, the ancestor of sharks. Dunkleosteus, formerly called Dinichthys, is a large fossil placoderm. He lived in the Upper Devonian, between 415 and 360 million years. The largest representatives of the genus were approximately 8-10 m long and weighed around 5 tonnes. These fish were probably the greatest marine predators of their time. A 30-foot-long, four-ton hypercarnivorous apex predator of the species Dunkleosteus terrellix is about to make a meal of a six-foot-long primitive shark of the genus Cladoselache 370 million years ago in the Rheic Ocean near what is today North America. Dunkleosteus terrellix was one of the largest arthrodire placoderms ever to have lived. Almost as long as a school bus, It was heavily armored and therefore likely a relatively slow, but powerful swimmer. There are four Cladoselache/primitive sharks in this image. The schooling fish are generic representativ

Walter B Myers

PIX4661669

Arabian desert seen by satellite 01/2016 - Eastern Desert - Egypt: Part of the Arabian desert in Egypt seen by Sentinel-2A satellite on 17 January 2016. The vegetation appears in red near the Nile. The Sentinel-2A satellite takes us over central-eastern Egypt with this image from 17 January. The image is dominated by arid desert - namely the Eastern Desert between the Nile River the Red Sea. The distinctive pattern of water erosion from rivers and streams is clearly visible as they make their way towards the Nile, at which point the rolling sandy highlands drop abruptly at the Nile valley, visible along the bottom of the image. Fields of intensive farming along the Nile appear red owing to this false-colour image being processed to include the near-infrared. The varying shades of red indicate how sensitive the multispectral instrument on Sentinel-2 is to differences in chlorophyll content, providing key information on plant health. Zooming in along the bottom we can see clusters of bla

Arabian desert seen by satellite 01/2016 - Eastern Desert - Egypt: Part of the Arabian desert in Egypt seen by Sentinel-2A satellite on 17 January 2016. The vegetation appears in red near the Nile. The Sentinel-2A satellite takes us over central-eastern Egypt with this image from 17 January. The image is dominated by arid desert - namely the Eastern Desert between the Nile River the Red Sea. The distinctive pattern of water erosion from rivers and streams is clearly visible as they make their way towards the Nile, at which point the rolling sandy highlands drop abruptly at the Nile valley, visible along the bottom of the image. Fields of intensive farming along the Nile appear red owing to this false-colour image being processed to include the near-infrared. The varying shades of red indicate how sensitive the multispectral instrument on Sentinel-2 is to differences in chlorophyll content, providing key information on plant health. Zooming in along the bottom we can see clusters of bla

PIX4630475

SMOS Satellite - Artist's view of the European satellite SMOS (Soil Moisture and Ocean Salinity) in orbit around the Earth. This satellite will perform the first global mapping of soil moisture and ocean salinity. The satellite was launched and put into orbit on 2 November 2009. The Soil Moisture and Ocean Salinity (SMOS) mission make global observations of soil moisture over Earth's landmasses and salinity over the oceans. Variations in soil moisture and ocean salinity are a consequence of the continuous exchange of water between the oceans, the atmosphere and the land - Earth's water cycle. SMOS was launched on November 2, 2009

SMOS Satellite - Artist's view of the European satellite SMOS (Soil Moisture and Ocean Salinity) in orbit around the Earth. This satellite will perform the first global mapping of soil moisture and ocean salinity. The satellite was launched and put into orbit on 2 November 2009. The Soil Moisture and Ocean Salinity (SMOS) mission make global observations of soil moisture over Earth's landmasses and salinity over the oceans. Variations in soil moisture and ocean salinity are a consequence of the continuous exchange of water between the oceans, the atmosphere and the land - Earth's water cycle. SMOS was launched on November 2, 2009

PIX4644205

The Suez Canal seen from space 06/2018 (photo)

The Suez Canal seen from space 06/2018 (photo)

PIX5973661

Lake Nasser - Egypt - seen from space - Lake Nasser (Egypt) seen from space - Lake Nasser seen from the International Space Station (ISS) on January 23, 2005. Egypt's Lake Nasser, centered roughly at 22.64 degrees north latitude and 32.45 degrees east longitude, was captured with an electronic still camera by the Expedition 10 crew onboard the International Space Station. Sunglint on the lake makes it more easily visible. 23 January 2005

Lake Nasser - Egypt - seen from space - Lake Nasser (Egypt) seen from space - Lake Nasser seen from the International Space Station (ISS) on January 23, 2005. Egypt's Lake Nasser, centered roughly at 22.64 degrees north latitude and 32.45 degrees east longitude, was captured with an electronic still camera by the Expedition 10 crew onboard the International Space Station. Sunglint on the lake makes it more easily visible. 23 January 2005

PIX4658744

The First Trees on Earth - Artist View - First Trees - Artist view - 385 million years ago, in the upper Devonian, the first trees began to appear on Earth. In this illustration, the archaeopteris, considered the first tree, is present at different stages of its evolution, with on the left a young specimen of 6 metres, in the centre a tree twice as large, on the right, an even older specimen. At the extreme right, a strain of an old Archaeopteris collapse. 385 million years ago, near the end of the Devonian period, the first trees began to populate the Earth. Considered the first modern trees, the Archaeopteris were a part of the Earth's primitive forests for the next 25 million years. Unlike the trees we know today, Archaeopteris was in fact a primitive fern that reproduced by means of spores instead of seeds. While terrestrial plants had been around for 130 million years prior to Archaeopteris, this was the first plant to solve the biomechanical challenges of supporting and nurturing

The First Trees on Earth - Artist View - First Trees - Artist view - 385 million years ago, in the upper Devonian, the first trees began to appear on Earth. In this illustration, the archaeopteris, considered the first tree, is present at different stages of its evolution, with on the left a young specimen of 6 metres, in the centre a tree twice as large, on the right, an even older specimen. At the extreme right, a strain of an old Archaeopteris collapse. 385 million years ago, near the end of the Devonian period, the first trees began to populate the Earth. Considered the first modern trees, the Archaeopteris were a part of the Earth's primitive forests for the next 25 million years. Unlike the trees we know today, Archaeopteris was in fact a primitive fern that reproduced by means of spores instead of seeds. While terrestrial plants had been around for 130 million years prior to Archaeopteris, this was the first plant to solve the biomechanical challenges of supporting and nurturing

Walter B Myers

PIX4632789

Vatnajokull Glacier in Iceland - The Vatnajoekull is Iceland's largest ice cap and the second largest glacier in Europe. It is located in the south-east of Iceland. Vatnajoekull is the largest and most voluminous ice cap in Iceland, and one of the largest in area in Europe

Vatnajokull Glacier in Iceland - The Vatnajoekull is Iceland's largest ice cap and the second largest glacier in Europe. It is located in the south-east of Iceland. Vatnajoekull is the largest and most voluminous ice cap in Iceland, and one of the largest in area in Europe

Alex Tudorica

PIX4666283

Vatnajokull Glacier in Iceland - The Vatnajoekull is Iceland's largest ice cap and the second largest glacier in Europe. It is located in the south-east of Iceland. Vatnajoekull is the largest and most voluminous ice cap in Iceland, and one of the largest in area in Europe

Vatnajokull Glacier in Iceland - The Vatnajoekull is Iceland's largest ice cap and the second largest glacier in Europe. It is located in the south-east of Iceland. Vatnajoekull is the largest and most voluminous ice cap in Iceland, and one of the largest in area in Europe

Alex Tudorica

PIX4666313

Godafoss Waterfall - Iceland - Godafoss waterfall in Iceland - One of the most beautiful waterfalls in Iceland: Godafoss or the fall of the Gods. March 30, 2016

Godafoss Waterfall - Iceland - Godafoss waterfall in Iceland - One of the most beautiful waterfalls in Iceland: Godafoss or the fall of the Gods. March 30, 2016

Alex Tudorica

PIX4666404

Centrosaurus - A couple of Centrosaurus apertus tries to escape a night forest fire. Centrosaurus was a Ceratopsian dinosaur. A couple of Centrosaurus apertus flee a predawn forest fire by attempting to cross a flooding river

Centrosaurus - A couple of Centrosaurus apertus tries to escape a night forest fire. Centrosaurus was a Ceratopsian dinosaur. A couple of Centrosaurus apertus flee a predawn forest fire by attempting to cross a flooding river

Julius Csotonyi

PIX4663094

Betsiboka River Delta - Madagascar - - Betsiboka estuary, Madagascar, seen from space - Betsiboka River Delta seen from space shuttle Atlantis in July 2001. During the 20th Century Madagascar, the world's fourth largest island, experienced a tremendous reversal in the quantity of vegetative cover throughout the entire island. From an estimated 80 to 90 percent vegetation cover in 1900 to less than an estimated 10 percent by the year 2000, the rate of deforestation has been dramatic. This image, along with many other space - acquired images, documents the massive annual soil losses that have occurred during the last 30 years. Note the orange - brown sediment that is almost always being transported by the Betsiboka River and being deposited in the delta region. The sequence of images astronauts have taken over time, shows the sediment accumulating and forming islands in the estuary mouth

Betsiboka River Delta - Madagascar - - Betsiboka estuary, Madagascar, seen from space - Betsiboka River Delta seen from space shuttle Atlantis in July 2001. During the 20th Century Madagascar, the world's fourth largest island, experienced a tremendous reversal in the quantity of vegetative cover throughout the entire island. From an estimated 80 to 90 percent vegetation cover in 1900 to less than an estimated 10 percent by the year 2000, the rate of deforestation has been dramatic. This image, along with many other space - acquired images, documents the massive annual soil losses that have occurred during the last 30 years. Note the orange - brown sediment that is almost always being transported by the Betsiboka River and being deposited in the delta region. The sequence of images astronauts have taken over time, shows the sediment accumulating and forming islands in the estuary mouth

PIX4659018

Carboniferous flora and fauna - Carboniferous riverbank - Carboniferous landscape with its ferns, giant lycopods, sigillaria (sigillaria), calamites. Among the fauna are an amphibian, a scorpion and insects that dominated the landscape, such as the Meganeura, giant dragonfly with a wingspan of more than 80 cm, or the 2-metre-long arthropleura climbing here in a tree. Ferns, seed ferns, and giant lycopods (primitive moss - like plants with long slender leaves) flourished during the Carboniferous period, from about 360 to 300 million years ago. Some lycopods, such as the arboreal Sigillaria illustrated here, grew as high as 130 feet. (100 feet is considered tall for a modern Maple tree). Other tree - like plants included many varieties of the Calamites, extinct ancestors of modern horsetails. While the first dinosaurs were not to appear for another 130 million years, the Carboniferous forests were home to a plethora of terrestrial animals, including many species of invertebrates and some

Carboniferous flora and fauna - Carboniferous riverbank - Carboniferous landscape with its ferns, giant lycopods, sigillaria (sigillaria), calamites. Among the fauna are an amphibian, a scorpion and insects that dominated the landscape, such as the Meganeura, giant dragonfly with a wingspan of more than 80 cm, or the 2-metre-long arthropleura climbing here in a tree. Ferns, seed ferns, and giant lycopods (primitive moss - like plants with long slender leaves) flourished during the Carboniferous period, from about 360 to 300 million years ago. Some lycopods, such as the arboreal Sigillaria illustrated here, grew as high as 130 feet. (100 feet is considered tall for a modern Maple tree). Other tree - like plants included many varieties of the Calamites, extinct ancestors of modern horsetails. While the first dinosaurs were not to appear for another 130 million years, the Carboniferous forests were home to a plethora of terrestrial animals, including many species of invertebrates and some

Walter B Myers

PIX4632863

Dunkleosteus and Cladoselache - Dunkleosteus and Cladoselache - A Dunkleosteus approaches a Cladoselache, the ancestor of sharks. Dunkleosteus, formerly called Dinichthys, is a large fossil placoderm. He lived in the Upper Devonian, between 415 and 360 million years. The largest representatives of the genus were approximately 8-10 m long and weighed around 5 tonnes. These fish were probably the greatest marine predators of their time. In a Devonian lagoon, the giant placoderm fish, Dunkleosteus, drifts towards the early shark, Cladoselache

Dunkleosteus and Cladoselache - Dunkleosteus and Cladoselache - A Dunkleosteus approaches a Cladoselache, the ancestor of sharks. Dunkleosteus, formerly called Dinichthys, is a large fossil placoderm. He lived in the Upper Devonian, between 415 and 360 million years. The largest representatives of the genus were approximately 8-10 m long and weighed around 5 tonnes. These fish were probably the greatest marine predators of their time. In a Devonian lagoon, the giant placoderm fish, Dunkleosteus, drifts towards the early shark, Cladoselache

Julius Csotonyi

PIX4661565

Parasaurolophus - Two Parasaurolophus feed near a waterfall. These herbivorous dinosaurs lived in North America at the cretace about 75 million years ago. A pair of 3 ton plant-eating Parasaurolophus dine on flora near a waterfall 75 million years ago in North America. Similar to plant-eating Lambeosaurus of the same period, these dinosaurs also sported a distinctive hollow cranial crest

Parasaurolophus - Two Parasaurolophus feed near a waterfall. These herbivorous dinosaurs lived in North America at the cretace about 75 million years ago. A pair of 3 ton plant-eating Parasaurolophus dine on flora near a waterfall 75 million years ago in North America. Similar to plant-eating Lambeosaurus of the same period, these dinosaurs also sported a distinctive hollow cranial crest

Walter B Myers

PIX4663205

Omo Delta, Ethiopia (photo)

Omo Delta, Ethiopia (photo)

PIX5973662

Kirkjufell - Iceland: Waterfalls near Kirkjufell, an isolated mountain in Iceland, located on the Snaefellsnes Peninsula. March 2016. The little waterfall close to Kirkjufell, an isolated mountain in Snaefellsnes peninsula, one of the most iconic mountains in Iceland. March 2016

Kirkjufell - Iceland: Waterfalls near Kirkjufell, an isolated mountain in Iceland, located on the Snaefellsnes Peninsula. March 2016. The little waterfall close to Kirkjufell, an isolated mountain in Snaefellsnes peninsula, one of the most iconic mountains in Iceland. March 2016

Alex Tudorica

PIX4666468

Burma - Irrawaddy Delta - Burma - Irrawaddy River Delta - Irrawaddy Delta, Burma, seen from the International Space Station (ISS) in June 2002. The Irrawaddy river delta, seen from the International Space Station in June 2002

Burma - Irrawaddy Delta - Burma - Irrawaddy River Delta - Irrawaddy Delta, Burma, seen from the International Space Station (ISS) in June 2002. The Irrawaddy river delta, seen from the International Space Station in June 2002

PIX4659816

Ichthyostega & Rhacophyton - An Ichthyostega emerge water 365 million years ago to the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. On the left, one of the first species of fern, Rhacophyton ceratangium. A Late Devonian Ichthyostega emerges from waters of a floodplain 365 million years ago in what is today the Canadian Arctic. On the left is a four - foot - tall Rhacophyton ceratangium, an ancient shrub that is thought to be one of the earliest ferns. On the horizon are more Rhacophyton, along with towering Archaeopteris and Lycopsids in various stages of growth

Ichthyostega & Rhacophyton - An Ichthyostega emerge water 365 million years ago to the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. On the left, one of the first species of fern, Rhacophyton ceratangium. A Late Devonian Ichthyostega emerges from waters of a floodplain 365 million years ago in what is today the Canadian Arctic. On the left is a four - foot - tall Rhacophyton ceratangium, an ancient shrub that is thought to be one of the earliest ferns. On the horizon are more Rhacophyton, along with towering Archaeopteris and Lycopsids in various stages of growth

Walter B Myers

PIX4632781

Pirania - Artist's View - Middle Cambrian Pirania - Pirania is a genus of primitive sponge that inhabited the ocean floor about 505 million years ago in the Cambrian. A species of Pirania, a primitive sponge that populated the ocean floors about 505 million years ago. The stems were hollow with bunches of long spicules attached to them. Based upon a sketch reconstruction by J.K. Rigby from the book, The Burgess Shale by Harry B. Whittington. Published in 1985 by Yale University Press

Pirania - Artist's View - Middle Cambrian Pirania - Pirania is a genus of primitive sponge that inhabited the ocean floor about 505 million years ago in the Cambrian. A species of Pirania, a primitive sponge that populated the ocean floors about 505 million years ago. The stems were hollow with bunches of long spicules attached to them. Based upon a sketch reconstruction by J.K. Rigby from the book, The Burgess Shale by Harry B. Whittington. Published in 1985 by Yale University Press

Walter B Myers

PIX4633228

Lake Jokulsarlon in Iceland - Lake Jokulsarlon in Iceland - Glacial lake of Jokulsarlon located south of the Vatnajokull glacier in Iceland. Jokulsarlon is a glacial lake at the south end of the glacier Vatnajokull in Iceland

Lake Jokulsarlon in Iceland - Lake Jokulsarlon in Iceland - Glacial lake of Jokulsarlon located south of the Vatnajokull glacier in Iceland. Jokulsarlon is a glacial lake at the south end of the glacier Vatnajokull in Iceland

Alex Tudorica

PIX4666293

Meduses - Artist's view - A smack of jellyfish - Illustration of jellyfish swimming in the Panthalassic Ocean, about 500 million years ago in the Cambrian. A smack, or swarm, of jellyfish swim the Panthalassic Ocean 500 million years ago during the Cambrian Period. Jellyfish, AKA sea jellies, are free - swimming organisms from the phylum Cnidaria and may have been among the first mobile macro life forms to evolve on Earth. Their distinguishing feature is specialized cells that they use mainly for capturing prey. Their bodies consist of a non - living jelly - like substance, sandwiched between two layers of tissue that are mostly one cell thick. There are approximately 9,000 species of Cnidaria today

Meduses - Artist's view - A smack of jellyfish - Illustration of jellyfish swimming in the Panthalassic Ocean, about 500 million years ago in the Cambrian. A smack, or swarm, of jellyfish swim the Panthalassic Ocean 500 million years ago during the Cambrian Period. Jellyfish, AKA sea jellies, are free - swimming organisms from the phylum Cnidaria and may have been among the first mobile macro life forms to evolve on Earth. Their distinguishing feature is specialized cells that they use mainly for capturing prey. Their bodies consist of a non - living jelly - like substance, sandwiched between two layers of tissue that are mostly one cell thick. There are approximately 9,000 species of Cnidaria today

Walter B Myers

PIX4633290

Ichthyostega - Devonian tetrapods - View of atist depicting two Ichthyostega, tetrapods, 385 million years ago, to the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. Between them are represented in the water several trilobites and in the background a Bothriolepis. The vegetation consists mainly of ferns and archaeopteris, considered the first trees. A pair of four - limbed, Upper Devonian vertebrate animals of the genus Ichthyostega confront one another 365 million years ago at the edge of a freshwater pond. Basically half fish, half land animal, these tetrapods are each about three feet long. Between them in the water are several marine arthropods known as trilobites. Further beyond in the water is a 12 inch long Bothriolepis. Most of the plant life is varieties of fern, including the tall trees known as Archaeopteris

Ichthyostega - Devonian tetrapods - View of atist depicting two Ichthyostega, tetrapods, 385 million years ago, to the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. Between them are represented in the water several trilobites and in the background a Bothriolepis. The vegetation consists mainly of ferns and archaeopteris, considered the first trees. A pair of four - limbed, Upper Devonian vertebrate animals of the genus Ichthyostega confront one another 365 million years ago at the edge of a freshwater pond. Basically half fish, half land animal, these tetrapods are each about three feet long. Between them in the water are several marine arthropods known as trilobites. Further beyond in the water is a 12 inch long Bothriolepis. Most of the plant life is varieties of fern, including the tall trees known as Archaeopteris

Walter B Myers

PIX4632784

Omo Delta, Ethiopia (photo)

Omo Delta, Ethiopia (photo)

PIX5973663

Lake Turkana, Ethiopia, Kenya (photo)

Lake Turkana, Ethiopia, Kenya (photo)

PIX5973664

Irrigation fields - Egypt - Agriculture in Egypt: Image obtained by the Landsat-8 satellite on 26 February 2017 showing an irrigated area in the middle of the desert in the Sharq el Oweinat region. On February 26, 2017, the Operational Land Imager (OLI) on Landsat 8 captured these natural-color images of East Oweinat, one of Egypt's land reclamation projects aimed at making some desert areas suitable for agriculture

Irrigation fields - Egypt - Agriculture in Egypt: Image obtained by the Landsat-8 satellite on 26 February 2017 showing an irrigated area in the middle of the desert in the Sharq el Oweinat region. On February 26, 2017, the Operational Land Imager (OLI) on Landsat 8 captured these natural-color images of East Oweinat, one of Egypt's land reclamation projects aimed at making some desert areas suitable for agriculture

PIX4630508

Ocean level rise - Hemisphere oriental - Earth's Eastern hemisphere with sea level+100m - Artist's view showing Asia and Oceania as they would appear if the ocean level increased by 100 metres. This would happen if all glaciers on Earth melt. This is how the Earth's Eastern hemisphere may appear with mean sea level about 100 meters (330 feet) above today's.

Ocean level rise - Hemisphere oriental - Earth's Eastern hemisphere with sea level+100m - Artist's view showing Asia and Oceania as they would appear if the ocean level increased by 100 metres. This would happen if all glaciers on Earth melt. This is how the Earth's Eastern hemisphere may appear with mean sea level about 100 meters (330 feet) above today's.

Walter B Myers

PIX4633107

100m ocean level rise - South Asia - South Asia with sea level+100m - Artist's view showing South Asia as it would appear if the ocean level increased by 100 metres. This would happen if all glaciers on Earth melt. This is how South Asia may appear with mean sea level about 100 meters (330 feet) above today's. Such a dramatic rise in sea level could occur if all of the Earth's glaciers were to melt. In this image over half of Pakistan along with the Indian state of Gujarat have become part of the Arabian Sea while the Persian Gulf has consumed Iran's border with Kuwait and some of Iraq. Bangladesh has succumbed entirely to the Bay of Bengal. The Gulf of Martaban now flows into much of Myanmar

100m ocean level rise - South Asia - South Asia with sea level+100m - Artist's view showing South Asia as it would appear if the ocean level increased by 100 metres. This would happen if all glaciers on Earth melt. This is how South Asia may appear with mean sea level about 100 meters (330 feet) above today's. Such a dramatic rise in sea level could occur if all of the Earth's glaciers were to melt. In this image over half of Pakistan along with the Indian state of Gujarat have become part of the Arabian Sea while the Persian Gulf has consumed Iran's border with Kuwait and some of Iraq. Bangladesh has succumbed entirely to the Bay of Bengal. The Gulf of Martaban now flows into much of Myanmar

Walter B Myers

PIX4633202

Phacops face - Artist's view of Phacops evoluting in the Silurian Sea (- 436 million years). Close - up of the face, eyes and antennae of a trilobite of the genus Phacops as it may have appeared 436 million years ago. The Phacops in this image is about six inches long. A marine arthropod of the class Trilobita, Phacops is characterized by a rounded body with a globose head. Phacops, like most trilobites, had a pair of sophisticated compound eyes composed of hundreds of rigid, crystalline lenses

Phacops face - Artist's view of Phacops evoluting in the Silurian Sea (- 436 million years). Close - up of the face, eyes and antennae of a trilobite of the genus Phacops as it may have appeared 436 million years ago. The Phacops in this image is about six inches long. A marine arthropod of the class Trilobita, Phacops is characterized by a rounded body with a globose head. Phacops, like most trilobites, had a pair of sophisticated compound eyes composed of hundreds of rigid, crystalline lenses

Walter B Myers

PIX4633248

Ice on the Moon - Illustration - Lunar ice - Illustration - Artist's view of ice on the surface of a crater that remains perpetually in the shade of the Sun, near the poles. Water from an encounter with an icy comet has collected in the perpetual shade of a deep crater where the temperature is a constant - 380o F. In 1998, the unmanned Lunar Prospector probe discovered evidence for water ice on the surface of the moon. Some scientists believe that as much as 10 to 300 million tons of ice may reside at the moon's North and South poles. The source of the ice is thought to be from one or more comets that struck the moon's surface four billion years ago. (It is thought that Earth's water may have come from comets as well.) Unfortunately, the moon's small size and lack of an atmosphere caused it to lose almost all of its accumulated water to space. Any water that does remain on the moon would likely be on the poles, hidden in craters and depressions shaded from the Sun

Ice on the Moon - Illustration - Lunar ice - Illustration - Artist's view of ice on the surface of a crater that remains perpetually in the shade of the Sun, near the poles. Water from an encounter with an icy comet has collected in the perpetual shade of a deep crater where the temperature is a constant - 380o F. In 1998, the unmanned Lunar Prospector probe discovered evidence for water ice on the surface of the moon. Some scientists believe that as much as 10 to 300 million tons of ice may reside at the moon's North and South poles. The source of the ice is thought to be from one or more comets that struck the moon's surface four billion years ago. (It is thought that Earth's water may have come from comets as well.) Unfortunately, the moon's small size and lack of an atmosphere caused it to lose almost all of its accumulated water to space. Any water that does remain on the moon would likely be on the poles, hidden in craters and depressions shaded from the Sun

Walter B Myers

PIX4580041

Lake Chad seen by satellite in 2007 - Lake Chad as seen by satellite in 2007 - Lake Chad seen by Envisat satellite on 19 December 2007. This Envisat image highlights Lake Chad, a freshwater lake located in central Africa at the junction of Chad, Cameroon, Nigeria and Niger. Lake Chad, once Africa's third largest inland water body, is located in West Africa's Sahel region - a transition zone between the Sahara Desert to the north and savannas and woodlands to the south. Because the lake is shallow, between 1 m in the northwest and 7 m in the south, it has always undergone seasonal fluctuations. However, it has shrunk dramatically over the last four decades due to a decrease in rainfall and an increase in the amount of water used for irrigation projects. Lake Chad's surface area was 25 000 sq km in the early 1960s, compared with 1350 sq km in 2001. Lake Chad is fed primarily by the Chari and Logone Rivers, which are both located in the southwest and flow northward into the lake, which do

Lake Chad seen by satellite in 2007 - Lake Chad as seen by satellite in 2007 - Lake Chad seen by Envisat satellite on 19 December 2007. This Envisat image highlights Lake Chad, a freshwater lake located in central Africa at the junction of Chad, Cameroon, Nigeria and Niger. Lake Chad, once Africa's third largest inland water body, is located in West Africa's Sahel region - a transition zone between the Sahara Desert to the north and savannas and woodlands to the south. Because the lake is shallow, between 1 m in the northwest and 7 m in the south, it has always undergone seasonal fluctuations. However, it has shrunk dramatically over the last four decades due to a decrease in rainfall and an increase in the amount of water used for irrigation projects. Lake Chad's surface area was 25 000 sq km in the early 1960s, compared with 1350 sq km in 2001. Lake Chad is fed primarily by the Chari and Logone Rivers, which are both located in the southwest and flow northward into the lake, which do

PIX4659459

Eryops - Close to modern crocodiles, two Eryops, giant prehistoric amphibians evolute in a carboniferous marsh about 300 million years ago. With a length of up to two metres, Eryops was one of the greatest predators of his time. Also visible in the picture, lower right, is an amphibian (Ophiderpeton) and a Meganeura in flight. Resembling modern crocodiles, two giant prehistoric amphibians from the genus Eryops dominate a Carboniferous swamp 300 million years ago in what is today North America. At six feet long and 200 pounds, Eryops was one of the largest predators of its time. It probably spent most of its time in the water, and like modern crocodiles probably fed on fish and other swimming vertebrates. Also in this image, on the lower right is a snake - like, legless amphibian from the genus Ophiderpeton. Flying overhead and resembling a giant dragonfly is a prehistoric insect from the genus Meganeura. The tree - like plants making up the surrounding forest include Sigillaria scutell

Eryops - Close to modern crocodiles, two Eryops, giant prehistoric amphibians evolute in a carboniferous marsh about 300 million years ago. With a length of up to two metres, Eryops was one of the greatest predators of his time. Also visible in the picture, lower right, is an amphibian (Ophiderpeton) and a Meganeura in flight. Resembling modern crocodiles, two giant prehistoric amphibians from the genus Eryops dominate a Carboniferous swamp 300 million years ago in what is today North America. At six feet long and 200 pounds, Eryops was one of the largest predators of its time. It probably spent most of its time in the water, and like modern crocodiles probably fed on fish and other swimming vertebrates. Also in this image, on the lower right is a snake - like, legless amphibian from the genus Ophiderpeton. Flying overhead and resembling a giant dragonfly is a prehistoric insect from the genus Meganeura. The tree - like plants making up the surrounding forest include Sigillaria scutell

Walter B Myers

PIX4632864

Eogyrinus - Eogyrinus was one of the largest tetrapods of Carbonifere. It could reach 4.6m in length. His fossils were found in England. He was part of the Anthracosaur amphibian group that survived as far as Permian. It is believed that these amphibians were the ancestors of the group from which the reptiles were derived. In the background, a Meganeura, a giant dragonfly whose wingspan could exceed 80 cm. A 15 foot long, 200 pound prehistoric amphibian from the genus Eogyrinus swims down a Carboniferous tributary 300 million years ago in what is today western Europe. Further up the tributary another Eogyrinus prepares to enter the water. Eogyrinus was one of the largest predators of its time, and perhaps the largest of the family Eogyrinidae. It probably spent most of its time in the water, and like modern crocodiles probably fed on fish and other swimming vertebrates. Also in this image, on the upper left on the trunk of a Sigillaria scutellata is a giant millipede and cockroach. Fly

Eogyrinus - Eogyrinus was one of the largest tetrapods of Carbonifere. It could reach 4.6m in length. His fossils were found in England. He was part of the Anthracosaur amphibian group that survived as far as Permian. It is believed that these amphibians were the ancestors of the group from which the reptiles were derived. In the background, a Meganeura, a giant dragonfly whose wingspan could exceed 80 cm. A 15 foot long, 200 pound prehistoric amphibian from the genus Eogyrinus swims down a Carboniferous tributary 300 million years ago in what is today western Europe. Further up the tributary another Eogyrinus prepares to enter the water. Eogyrinus was one of the largest predators of its time, and perhaps the largest of the family Eogyrinidae. It probably spent most of its time in the water, and like modern crocodiles probably fed on fish and other swimming vertebrates. Also in this image, on the upper left on the trunk of a Sigillaria scutellata is a giant millipede and cockroach. Fly

Walter B Myers

PIX4632823

Carboniferous fire - Carboniferous firestorm - Fire in a forest of ferns, sigillaria (sigillaria), calamites, cordaites and asterophyllites. In the foreground giant invertebrae try to take refuge in water. Fire rages through a prehistoric forest of towering Sigillaria and Cordaites, Asterophyllites, Calamites, and ferns. In the foreground a potpourri of giant Carboniferous invertebrates flee the conflagration, heading for the only real estate not subject to burning: water. On the left is a giant, 3 foot centipede; in the center is a giant Arthropleura, the largest known arthropod ever to walk the earth; on the right is a two - foot - long scorpion, and in between are dozens of prehistoric “” roachoids,””” some taking briefly to the searing air. On the far left submerged in the relative comfort of the water is a Dendrerpeton awaiting the prospect of an easy meal. 300 million years ago the Earth's atmosphere may have held considerably more oxygen than today; the air may have been as much

Carboniferous fire - Carboniferous firestorm - Fire in a forest of ferns, sigillaria (sigillaria), calamites, cordaites and asterophyllites. In the foreground giant invertebrae try to take refuge in water. Fire rages through a prehistoric forest of towering Sigillaria and Cordaites, Asterophyllites, Calamites, and ferns. In the foreground a potpourri of giant Carboniferous invertebrates flee the conflagration, heading for the only real estate not subject to burning: water. On the left is a giant, 3 foot centipede; in the center is a giant Arthropleura, the largest known arthropod ever to walk the earth; on the right is a two - foot - long scorpion, and in between are dozens of prehistoric “” roachoids,””” some taking briefly to the searing air. On the far left submerged in the relative comfort of the water is a Dendrerpeton awaiting the prospect of an easy meal. 300 million years ago the Earth's atmosphere may have held considerably more oxygen than today; the air may have been as much

Walter B Myers

PIX4632902

Orthoceratites & trilobites - Artist's view of an Orthoceras catching a trilobite (Asaphus kowalewskii) in an Ordovician sea 480 million years ago. Orthoceras (Greek straight horn) is a genus of mollusk cephalopod fossil. They returned in large numbers during the Paleozoic and were the main predators. Squid - like Orthoceratites (genus Orthoceras) attempt to make meals of trilobites of the species Asaphus kowalewskii at the bottom of an Ordovician sea 480 million years ago. Also featured is a sea star (AKA starfish), an echinoderm of the class Asteroidea; palm - like Crinoids (AKA sea lilies); Rugosa (AKA Tetracoralla); Favistina stellata coral; and Vauxia sponges.

Orthoceratites & trilobites - Artist's view of an Orthoceras catching a trilobite (Asaphus kowalewskii) in an Ordovician sea 480 million years ago. Orthoceras (Greek straight horn) is a genus of mollusk cephalopod fossil. They returned in large numbers during the Paleozoic and were the main predators. Squid - like Orthoceratites (genus Orthoceras) attempt to make meals of trilobites of the species Asaphus kowalewskii at the bottom of an Ordovician sea 480 million years ago. Also featured is a sea star (AKA starfish), an echinoderm of the class Asteroidea; palm - like Crinoids (AKA sea lilies); Rugosa (AKA Tetracoralla); Favistina stellata coral; and Vauxia sponges.

Walter B Myers

PIX4633258

Pterygotus - Artist's view of pterygotus, a giant sea scorpion (eurypteride) 432 million years ago. Art work of a marine arthropod of the genus Pterygotus as it may have appeared 432 million years ago. This Pterygotus is about five feet long. Other fauna in this image include trilobites of the genus Phacops and sessile polyps of the order Actiniaria. Pterygotus is from the extinct order eurypterida (Sea Scorpion), and characterized by a pair of large compound eyes, as well as a pair of smaller eyes atop its head. It had 4 pairs of walking legs, a fifth pair modified into swimming paddles, and a pair of large pincers for grasping prey

Pterygotus - Artist's view of pterygotus, a giant sea scorpion (eurypteride) 432 million years ago. Art work of a marine arthropod of the genus Pterygotus as it may have appeared 432 million years ago. This Pterygotus is about five feet long. Other fauna in this image include trilobites of the genus Phacops and sessile polyps of the order Actiniaria. Pterygotus is from the extinct order eurypterida (Sea Scorpion), and characterized by a pair of large compound eyes, as well as a pair of smaller eyes atop its head. It had 4 pairs of walking legs, a fifth pair modified into swimming paddles, and a pair of large pincers for grasping prey

Walter B Myers

PIX4633251

Ammonite - Artist's view - Early Jurassic ammonite - Artist's view of an ammonite 195 million years ago. A mollusk of the subclass Ammonoidea in a Jurassic sea 195 million years ago. This specimen's planispiral shell is about six inches in diameter. Ammonites were plentiful in the Earth's oceans for about 400 million years becoming extinct, along with the dinosaurs, about 66 million years ago during the Cretaceous - Paleogene (K - Pg) extinction event. While resembling modern shelled nautiloids, these once plentiful mollusks are more closely related to living octopuses, squid, and cuttlefish

Ammonite - Artist's view - Early Jurassic ammonite - Artist's view of an ammonite 195 million years ago. A mollusk of the subclass Ammonoidea in a Jurassic sea 195 million years ago. This specimen's planispiral shell is about six inches in diameter. Ammonites were plentiful in the Earth's oceans for about 400 million years becoming extinct, along with the dinosaurs, about 66 million years ago during the Cretaceous - Paleogene (K - Pg) extinction event. While resembling modern shelled nautiloids, these once plentiful mollusks are more closely related to living octopuses, squid, and cuttlefish

Walter B Myers

PIX4633265

Middle Jurassic ammonites - Ammonites - Artist's view - View of ammonites artist 170 million years ago. Mollusks of the subclass Ammonoidea in a Jurassic sea 170 million years ago. The planispiral shells are about 30 inches in diameter, making them among the larger known ammonites. Also in this image are ray - finned fish of the infraclassTeleostei and jellyfish of the order Scyphozoa. Ammonites were plentiful in the Earth's oceans for about 400 million years becoming extinct, along with the dinosaurs, about 66 million years ago during the Cretaceous - Paleogene (K - Pg) extinction event. While resembling modern shelled nautiloids, these once plentiful mollusks are more closely related to living octopuses, squid, and cuttlefish

Middle Jurassic ammonites - Ammonites - Artist's view - View of ammonites artist 170 million years ago. Mollusks of the subclass Ammonoidea in a Jurassic sea 170 million years ago. The planispiral shells are about 30 inches in diameter, making them among the larger known ammonites. Also in this image are ray - finned fish of the infraclassTeleostei and jellyfish of the order Scyphozoa. Ammonites were plentiful in the Earth's oceans for about 400 million years becoming extinct, along with the dinosaurs, about 66 million years ago during the Cretaceous - Paleogene (K - Pg) extinction event. While resembling modern shelled nautiloids, these once plentiful mollusks are more closely related to living octopuses, squid, and cuttlefish

Walter B Myers

PIX4633301

Lake Orumieh in Iran seen from space - Lake Urmia in Iran seen from space - Lake Orumieh is the largest lake in Iran. This dirty lake is a UNESCO biosphere reserve. Image obtained from the International Space Station (ISS) on 23 August 2002. Lake Urmia is an isolated lake in Azerbaijan Province in northwest Iran. The total area of the lake is 1815 square miles (4700 square kilometers), and the north - south length is about 90 miles (145 kilometers). The maximum depth of the shallow, saline lake is approximately 50 feet (15 meters). Climatically, the lake region is located in a semiarid, almost desert environment, with general precipitation averaging 12 inches (30 centimeters) per year. Topographically, the entire region is either plateau or mountain. The surface of the lake is approximately 4100 feet (1250 meters) above sea level with several of the individual volcanic peaks reaching more than 7000 feet (2134 meters) above sea level. The massive, rugged mountain range west of the lake

Lake Orumieh in Iran seen from space - Lake Urmia in Iran seen from space - Lake Orumieh is the largest lake in Iran. This dirty lake is a UNESCO biosphere reserve. Image obtained from the International Space Station (ISS) on 23 August 2002. Lake Urmia is an isolated lake in Azerbaijan Province in northwest Iran. The total area of the lake is 1815 square miles (4700 square kilometers), and the north - south length is about 90 miles (145 kilometers). The maximum depth of the shallow, saline lake is approximately 50 feet (15 meters). Climatically, the lake region is located in a semiarid, almost desert environment, with general precipitation averaging 12 inches (30 centimeters) per year. Topographically, the entire region is either plateau or mountain. The surface of the lake is approximately 4100 feet (1250 meters) above sea level with several of the individual volcanic peaks reaching more than 7000 feet (2134 meters) above sea level. The massive, rugged mountain range west of the lake

PIX4660548

Earth seen by satellite - Earth seen by satellite - Earth seen by satellite centree on the Pacific Ocean. Image recomposed from Terra satellite data. Global Earth centered on Pacific Ocean seen by satellite Terra

Earth seen by satellite - Earth seen by satellite - Earth seen by satellite centree on the Pacific Ocean. Image recomposed from Terra satellite data. Global Earth centered on Pacific Ocean seen by satellite Terra

PIX4631960

Florida seen by Envisat - Florida seen from space - This image taken by Envisat shows Florida Detroit through which the Loop Current “” flows eastward out of the Gulf of Mexico before joining the “Gulf Stream” which passes off the western coast of the United States and Newfoundland (not visible here). Scientists are monitoring this near area because they are concerned about the possibility that the winds may push the Black Marea of the Gulf of Mexico (visible west of Florida) south into the Loop Current “or that the current may extend northward to reach the oil slick. If oil from this slick were to penetrate into the Loop Current, it could be drained towards the Florida Keys archipelago (this set of circular islands associated with coral reefs off the tip of Florida) and further east to the Gulf Stream. By combining sea surface state and current circulation information with Envisat Advanced Synthetic Aperture Radar (ASAR) data on black maree, analysts are able to determine in which dir

Florida seen by Envisat - Florida seen from space - This image taken by Envisat shows Florida Detroit through which the Loop Current “” flows eastward out of the Gulf of Mexico before joining the “Gulf Stream” which passes off the western coast of the United States and Newfoundland (not visible here). Scientists are monitoring this near area because they are concerned about the possibility that the winds may push the Black Marea of the Gulf of Mexico (visible west of Florida) south into the Loop Current “or that the current may extend northward to reach the oil slick. If oil from this slick were to penetrate into the Loop Current, it could be drained towards the Florida Keys archipelago (this set of circular islands associated with coral reefs off the tip of Florida) and further east to the Gulf Stream. By combining sea surface state and current circulation information with Envisat Advanced Synthetic Aperture Radar (ASAR) data on black maree, analysts are able to determine in which dir

PIX4673019

Ichthyostega underwater - View of an Ichthyostega 365 million years ago at the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. A Late Devonian Ichthyostega submerged in a floodplain 365 million years ago in what is today the Canadian Arctic. The tree - like trunk immediately behind the Ichthyostega is the base of a Pleuromeia. The Ichthyostega is eyeing a drowned centipede. Ichthyostega was one of the earliest tetrapods, a descendent of lobe - finned fishes and ancestor of amphibians. Ichthyostega had lungs and seven - toed limbs that allowed it to move about the shallow waters and shores of swamps and floodplains. It was among the first terrestrial vertebrates

Ichthyostega underwater - View of an Ichthyostega 365 million years ago at the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. A Late Devonian Ichthyostega submerged in a floodplain 365 million years ago in what is today the Canadian Arctic. The tree - like trunk immediately behind the Ichthyostega is the base of a Pleuromeia. The Ichthyostega is eyeing a drowned centipede. Ichthyostega was one of the earliest tetrapods, a descendent of lobe - finned fishes and ancestor of amphibians. Ichthyostega had lungs and seven - toed limbs that allowed it to move about the shallow waters and shores of swamps and floodplains. It was among the first terrestrial vertebrates

Walter B Myers

PIX4632874

Trilobites - Artist's view - Phacops trilobites in a Silurian Sea - Artist's view of Phacops evoluting in the sea among the sponges (vauxia) to Silurian (- 436 million years). Trilobites of the genus Phacops scurry across the sandy bottom of a Silurian sea 436 million years ago. Also in this image are branching sponges from the genus Vauxia. Phacops is a marine arthropod of the class Trilobita. It is characterized by a rounded body with a globose head. The Phacops in this image are about six inches long

Trilobites - Artist's view - Phacops trilobites in a Silurian Sea - Artist's view of Phacops evoluting in the sea among the sponges (vauxia) to Silurian (- 436 million years). Trilobites of the genus Phacops scurry across the sandy bottom of a Silurian sea 436 million years ago. Also in this image are branching sponges from the genus Vauxia. Phacops is a marine arthropod of the class Trilobita. It is characterized by a rounded body with a globose head. The Phacops in this image are about six inches long

Walter B Myers

PIX4633255

Irrigated fields - Saudi Arabia - Irrigated fields - Saudi Arabia - Image obtained from the International Space Station (ISS) on February 11, 2017.

Irrigated fields - Saudi Arabia - Irrigated fields - Saudi Arabia - Image obtained from the International Space Station (ISS) on February 11, 2017.

PIX4658498

Ichthyostega - View of an Ichthyostega 365 million years ago at the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. On the left, one of the first species of fern, Rhacophyton ceratangium. In the foreground, prehistoric arthropods (diplopods and cockroaches). A close - up of a three foot long Late Devonian Ichthyostega 365 million years ago in what is today the Canadian Arctic. Flanking the Ichthyostega are Rhacophyton ceratangium, ancient shrubs that are thought to be one of the earliest ferns. The reddish fruit - like nodules attached to the fronds on the right are sporangia, enclosures in which spores are formed. The large tree - like trunk on the far left is the base of a young Archaeopteris. In the foreground are prehistoric arthropods - - a millipede on the left and on the right cockroaches on trunk of a decaying Lycopsid. Arthropods had been walking the Earth for 40 million years before vertebrates like Ichthyostega began venturing ash

Ichthyostega - View of an Ichthyostega 365 million years ago at the upper Devonian. Half-fish, half-terrestrial animal, the Ichthyostega was about 1 metre long. On the left, one of the first species of fern, Rhacophyton ceratangium. In the foreground, prehistoric arthropods (diplopods and cockroaches). A close - up of a three foot long Late Devonian Ichthyostega 365 million years ago in what is today the Canadian Arctic. Flanking the Ichthyostega are Rhacophyton ceratangium, ancient shrubs that are thought to be one of the earliest ferns. The reddish fruit - like nodules attached to the fronds on the right are sporangia, enclosures in which spores are formed. The large tree - like trunk on the far left is the base of a young Archaeopteris. In the foreground are prehistoric arthropods - - a millipede on the left and on the right cockroaches on trunk of a decaying Lycopsid. Arthropods had been walking the Earth for 40 million years before vertebrates like Ichthyostega began venturing ash

Walter B Myers

PIX4632814

Irrigation fields - Saudi Arabia - Agriculture in Saudi Arabia: Image in false colors obtained by Sentinel-2A satellite showing an agricultural area near Tabarjal in Saudi Arabia. This false-colour image from the Sentinel-2A satellite shows agricultural structures near Tabarjal, Saudi Arabia. Circles come from a central-pivot irrigation system, where the long water pipe rotates around a well at the centre

Irrigation fields - Saudi Arabia - Agriculture in Saudi Arabia: Image in false colors obtained by Sentinel-2A satellite showing an agricultural area near Tabarjal in Saudi Arabia. This false-colour image from the Sentinel-2A satellite shows agricultural structures near Tabarjal, Saudi Arabia. Circles come from a central-pivot irrigation system, where the long water pipe rotates around a well at the centre

PIX4630453

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