Baryonyx

Baryonyx is a genus of theropod from Europe during the early-cretaceous-period, around one-hundred and twenty-six-million-years ago.

Facts
A relative of the better-known Spinosaurus, only smaller and lacking a sail, Baryonyx is noted for having a crocodile-like-head and a big-claw on its pointer-finger which is used to spear and butcher fish (and maybe other animals).

In the film
A red-colored theropod, believed to be Baryonyx, was briefly seen lying dead, no doubt killed by the volcano.