Plesiosaurus macrocephalus, juvenile Found by Mary Anning marine reptile Ornithischians

Plesiosaurus macrocephalus, juvenile Found by Mary Anning marine reptile OrnithischiansThis juvenile Plesiosaur is from the Jurassic of Lyme Regis, England. It was found by Mary Anning. Plesiosaurs (meaning "near lizard") were flippered marine reptiles from the Mesozoic Era they were not dinosaurs. Plesiosaurs are divided into two groups: the Plesiosauroids with long, snake like necks, tiny heads, and wide bodies, and the Pliosauroids, which had large heads with very strong jaws and short necks. The first plesiosaur skeletons were found

Sagittal keel (visible midline ridge)

In the late 1980s

van Heerwarden

Levy County

It's not more then 10% reconstruction

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Location Hyampom

Life-size skeletal model

A cast of the complete skeleton is also available

David Michael Letterman (born April 12

The large size and spiny nature of this trilobite make it one of the more spectacular ones

Pachycephalosaurs are today grouped with the horned ceratopsians in the group Marginocephalia