Shonisaurus
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Shonisaurus is a genus of very large ichthyosaurs. At least 37 incomplete fossil specimens of the marine reptile have been found in the Luning Formation of Nevada, USA. This formation dates to the late Carnian age of the late Triassic period,... Wikipedia
Mass: 66,000 lbs
Length: 49 ft.
Scientific name: Shonisaurus (Lizard from the shoshone mountains)
Family: †Shastasauridae
Genus: †Shonisaurus; Camp, 1976