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The oldest near-complete tetrapod fossils, Acanthostega and Ichthyostega, date from the second half of the Fammennian. [56] [57] Although both were essentially four-footed fish, Ichthyostega is the earliest known tetrapod that may have had the ability to pull itself onto land and drag itself forward with its forelimbs. There is no evidence that ...
Colosteus is an extinct genus of colosteid tetrapod from the Late Carboniferous (late Westphalian stage) of Ohio.Its remains have been found at the Linton site in Saline Township, Ohio, where it is one of the most common tetrapods, [1] and at the Five Points site in Mahoning County, Ohio. [2]
Suborder Charadrii (plover-like waders). Family Charadriidae (plovers and lapwings); Family Haematopodidae (oystercatchers); Family Ibidorhynchidae (ibisbill); Family Recurvirostridae (avocets and stilts)
Lepospondyl and tetrapod classification is still controversial, and even recent studies have had doubts about lepospondyl monophyly. For example, a 2007 paper has suggested that adelospondyls are stem-tetrapods close to colosteids [ 3 ] and a 2017 paper on Lethiscus has Aïstopoda in the tetrapod stem based on their primitive braincase. [ 18 ]
Anthracodromeus is an extinct genus of Late Carboniferous (late Westphalian stage) "protorothyridid" tetrapods known from Ohio. It is known from the holotype AMNH 6940, a nearly complete skeleton. It was collected in the Linton site in Jefferson County, from the Allegheny Group.
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WASHINGTON (Reuters) -A large number of Americans' metadata has been stolen in the sweeping cyberespionage campaign carried out by a Chinese hacking group dubbed "Salt Typhoon," a senior U.S ...
Ichthyostega (from Greek: ἰχθῦς ikhthûs, 'fish' and Greek: στέγη stégē, 'roof') is an extinct genus of limbed tetrapodomorphs from the Late Devonian of what is now Greenland.