Thalassomedon
Reptiles
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Thalassomedon is a genus of plesiosaur, named by Welles in 1943. Wikipedia
Length: 36 ft.
Scientific name: Thalassomedon (Sea lord)
Lived: 99.6 million years ago - 93.5 million years ago (Cenomanian)
Genus: †Thalassomedon; Welles, 1943