ichthyosaurus

Enaliosaurians ('sea-lizards'), a group of gigantic Mesozoic reptiles of which the ichthyosaurus and plesiosaurus were the chief.

The Ichthyosaurus had an enormous head, with powerful jaws, furnished with numerous and strong teeth.

I measured a vine-like ichthyosaurus that was crawling to leeward, flat upon the earth.

This reptile, which was smaller than the Ichthyosaurus, has been found as long as from twelve to fifteen feet.

The Ichthyosauria are confined to beds of Secondary age and by far the best known genus is Ichthyosaurus.