Sign up for free

Newsletters

Once a month
get new photos
and expert tips.

Science and Space
Main Health and Human Body Earth Space Prehistoric World A-Z

Tylosaurus Attack

Among the last great marine reptiles, a Tylosaurus, shadowed by an offspring, drives away a shark, Cretoxyrhina mantelli, in North America's Western Interior Seaway. Part of a group of carnivores called mosasaurs, whose fossils are found on every continent, Tylosaurus measured roughly 45 feet (14 meters) long.

Artwork by Matte FX and NGM Art