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Tylosaurus Attack

Image: Marine reptile attacking a shark
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.
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