An 18-foot-long sea monster ruled the ancient ocean that once covered Kansas
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A newly described species of mosasaur, an extinct marine reptile, swam through Cretaceous seas 80 million years ago and had a slender snout like a crocodile's.An 18-foot-long sea monster ruled the ancient ocean that once covered Kansas
A newly described species of mosasaur, an extinct marine reptile, swam through Cretaceous seas 80 million years ago and had a slender snout like a crocodile's. Read more