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Re: Marine reptiles

How feasible would the predation of crocodilians such as _Machimosaurus_ and
_Metriorhynchus_ etc upon (smallish) dinosaurs be? Maybe they could grab a
dinosaur from the shore, drag it underwater and drown it before munching,
like recent crocs.

I know they're pretty well adapted to being wholly marine but then again so
are killer whales and they intentionally beach themselves to catch pinnipeds
with no problems.

Is there any evidence for marine crocs entering freshwater or at least river


Ps. come to mention it, what about pliosaurs doing the same thing?