Plesiosauroidea
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Plesiosauroidea is an extinct clade of carnivorous marine reptiles. They have the snake-like longest neck to body ratio of any reptile. Plesiosauroids are known from the Jurassic and Cretaceous period
Dolichorhynchops
Paleo Hall at HMNS plesiosaur
Traskasaura
Autograph letter concerning the discovery of Plesiosaurus dolichodeirus (NHMUK PV OR 22656), from Mary Anning.
Polycotylidae
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Polycotylidae is a family of plesiosaurs from the Cretaceous. Polycotylids first appeared during the Albian stage of the Early Cretaceous, before becoming abundant and widespread during the early Late
Plesiosauroidea
…classifications, all plesiosauroids have a small head and long neck but, in recent classifications, one short-necked and large-headed Cretaceous group, the Polycotylidae, are included under the Plesiosauroidea, rather than under the traditional Pliosauroidea. Size of different plesiosaurs varied significantly, with an…
Mounted skeleton of Trinacromerum
Placochelys BW
Nothosaurus BW
Leptocleidus BW