dinosaurs-rock.com

Talisman asked:


I wonder what wiped out oceanic dinosaurs like the Plesiosaurs? Some claim large asteriods might have wiped out land dinosaurs, and that the ice age might have wiped out sea dinosaurs. That doesn’t seem right to me, since turtles survived, as well as prehistoric fish such as the Coelacanth? The sea seems to have plenty of food living at various depths – so what is the most plausible suggestion as to why some early animals survived, while plesiosaurs and other aquatic dinosaurs did not?

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