Plesiosaur
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The Plesiosauria or plesiosaurs are an order or clade of extinct Mesozoic marine reptiles, belonging to the Sauropterygia. Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rha
Paleo Hall at HMNS plesiosaur
Peloneustes philarchus Tubingen
First published plesiosaur skeleton, 1719 (specimen NHMUK PV R.1330)
As this illustration shows, Conybeare by 1824 had gained a basically correct understanding of plesiosaur anatomy.
Sauropterygia
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Sauropterygia is an extinct clade of diverse, generally marine reptiles that developed from terrestrial ancestors soon after the end-Permian extinction and flourished during the Triassic before all ex
Plesiosaur
…The Plesiosauria or plesiosaurs are an order or clade of extinct Mesozoic marine reptiles, belonging to the Sauropterygia. Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rhaetian stage, about 203 million years ago. They became especially common…
Placodus gigas 2
Henodus chelyops 1
Skeleton Nothosauria naturkundemuseum Berlin
Keichousaurus hui fossil