'Dévonien' immagini e video risultati page 1 of 2

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Side profile of an eusthenopteron (photo)

DGA1135822

Side profile of an eusthenopteron (photo)

DGA1135822

Psilotum nudum, known as the skeleton fork fern, 2000

UIG3507562

Psilotum nudum, known as the skeleton fork fern, 2000

UIG3507560

Psilotum nudum, known as the skeleton fork fern, 2000

UIG3507558

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

Dunkleosteus terrelli

NHM1459841

Lycopod

NHM1453966

Archaeopteris hibernica

NHM1454928

Cheiracanthus murchisoni

NHM1455392

Landscape of the Devonian - Calamites & Asteroxylon - Landscape of the early Devonian, about 390 million years ago, with calamites and asteroxylon (in the foreground). This is how a forest of Calamites and Asteroxylon may have appeared just about anywhere on the Earth 390 million years ago. The Calamites are the slender “” Christmas tree””” shaped plants. They grew as tall as many of today's conifers, though they are the ancient ancestors of the much smaller modern horsetails. The snake - like curlicue plants in the foreground are the now - extinct Asteroxylon, which emerged at the beginning of the Devonian period about 417 million years ago

Walter B Myers

PIX4632884

Psilotum nudum, known as the skeleton fork fern, 2000

UIG3507559

Devonian Canopee - Artist's View - Devonian Canopy - Artist's View of an Archaeopteris Forest about 380 million years ago. The fossil record reveals that great forests of Archaeopteris covered much of the Earth 380 million years ago. The large umbrella - like fronds appear to have been optimized for gathering sunlight at the canopy level while still permitting enough light to reach the shorter and younger trees. It was great forests like these that helped to draw much of the carbon dioxide out of the primeval air while releasing the oxygen we breathe today

Walter B Myers

PIX4632762

Hydnoceras

NHM1456315

Terebratula sp, genus of Brachiopods already present during Devonian Period, Drawing (photo)

DGA1135736

Asteroxylon mackiei, Asteroxylaceae, Early Devonian, Artwork by Bridgette James (photo)

DGA1136473

Cooksonia sp, Tracheophyta, Late Silurian-Devonian, Artwork by Bridgette James (photo)

DGA1136474

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

Pterygotus sp, Pterygotidae, Late Silurian and Early Devonian, Illustration (photo)

DGA1136369

Ichthyostega skeleton, Tetrapoda, Late Devonian, Artwork by Tony Jackson (photo)

DGA1136471

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

Cooksonia sp.

NHM1452597

Bothriolepis canadensis

NHM1451086

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

380 million year old rocks

NHM1452769

Calymene blumenbachii

Prehistoric

NHM1457807

Illustration of Ichthyostega (photo)

DGA1136376

Calymene blumenbachii

Prehistoric

NHM1451651

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

Illustration of Cladoselache extinct fish (photo)

DGA1136457

Calymene blumenbachii brongniart

Prehistoric

NHM1452725

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

Illustration of Ichthyostega and Eusthenopteron (photo)

DGA1136470

Chapel Hill, from Old Woods Hill, 1791 (pen & ink with w/c on paper)

Gifford, Frances (fl.1791)

TOR2607268

View of Devonian Square, Toronto, Ontario, Canada

M Borchi

DGA5654066

The New Leyland Liner, "Devonian," for the Liverpool, Boston Service (b/w photo)

English Photographer, (20th century)

LIP1600612

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

Phacops rana africanus

NHM1452724

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

A chart of strata, layers of sedimentary rock or soil

MOR5614336

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Side profile of a fish (photo)

DGA1135825

Side profile of a fish (photo)

DGA1135825

Illustration of Dunkleosteus catching fish (photo)

DGA1136430

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

Triassic and Devonian rocks

NHM1453987

Cyrtopirifer verneuili (Murchison)

NHM1455681

Hemicyclaspis murchisoni and Thyestes egertoni

NHM1455781

Illustration representing Arthropod Merostoma - Pterygotus (photo)

DGA1136163

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

Illustration of Dunkleosteus, close up (photo)

DGA1136413

Doryaspis and Actiniaria - Artist view of Doryaspis swimming in the sea 410 million years ago. 8-inch-long jawless fish of the genus Doryaspis swim among a bed of Anthozoa of the order Actiniaria (AKA sea anemones) 410 million years ago in what is today the Svalbard archipelago in Norway. Doryaspis (AKA Lyktaspis) was armored with bony spines and a long snout that had spines set along its length (somewhat like the “” saw””” of a modern sawfish). Doryaspis 'mouth opened above, rather than below, the snout and is believed to have dined on plankton, however the snout may have been used to stir up small crustaceans from the mud or sand. In addition to a variety of anemones are palm-like crinoids (class Crinoidea), pentagonal-shaped sea stars, nautilus-like ammonites, and squid-like nautiloid cephalopods of the genus Orthoceras

Walter B Myers

PIX4661642

Prehistory: trilobite Phacops Rana fossil (arthropod). Age of the Paleozoic, period of the Devonian. Find in the Bundenbach area in Germany.

Prehistoric

Giancarlo Costa

GIA4800339

Cyathophyllum sp.

NHM1450946

Prehistory: trilobite Phacops Rana fossil (arthropod). Age of the Paleozoic, period of the Devonian. Find in Ohio, United States

Prehistoric

Giancarlo Costa

GIA4800322

Pterygotus hunting an insect (photo)

DGA1135821

On the Plym (w/c on paper)

Towne, Francis (1740-1816)

AGN271119

Formation of the layers of the Earth's crust up to the Cretaceous Period (colour litho)

Spanish School, (19th century)

LLM5996986

Dinichthys, kind of placoderms, Devonian shielded fish. Chromolithography of F. John (series prehistoric animals of the Reichardt Cocoa Company), originally published in “Animals of the Prehistoric World”, 1910, Hamburg (Germany), text by Wilhelm Bolsche.

FLO4639024

Pterichthyode, genus of placoderm fish from the Devonian period. Chromolithography of F. John (series prehistoric animals of the Reichardt Cocoa Company), originally published in “Animals of the Prehistoric World”, 1910, Hamburg (Germany), text by Wilhelm Bolsche.

FLO4639873

Devonian Landscape, England, 2011 (photo)

Walter B Myers

PIX4632919

Brittle star, Bundenbachia sp (Asteroidea) (photo)

DGA1135671

Illustration of prehistoric fish in river and amphibians and arthropods on shore (photo)

DGA1136507

Illustration of Hemicyclaspis on white background (photo)

DGA1136460

Illustration of lobe-finned fish (photo)

DGA1136487

Illustration of two Ichthyostega amphibians (photo)

DGA1136458

Illustration of Ichthyostega amphibians on marsh shore (photo)

DGA1136459

Illustration of Pteraspis on white background (photo)

DGA1136462

Adam Sedgwick (1785-1873)

UIG863958

Dinichthys herzeri, giant marine arthrodire placoderm., 1908 (print)

John, F. (20th century)

FLO7233561

Acanthostega

NHM1452909

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