At the end of the Cretaceous Period, a type of giant reptile called mosasaurs occupied and dominated oceanic food webs. Mosasaurs had long bodies and were related to both snakes and monitor lizards.

Imagine swimming in the ocean and suddenly spotting a creature larger than any shark, faster than any human can sprint, and more vicious than any predator alive today. Meet the Mosasaurus, a marine ...

An enormous sea snake from Norse legend that was fathered by the trickster god Loki and grew big enough to circle the globe is now the namesake for a different type of “monster” — a newly discovered ...

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A reconstruction of two Jǫrmungandr walhallaensis mosasaurs fighting. The sea lizards with "angry eyebrows" swam in ancient North Dakota and were named after a Norse sea creature and Walhalla where ...

No aquatic reptiles today can match mosasaurs, ocean-dwelling creatures of the Cretaceous period that looked something like a cross between a whale and a shark. Now, a group of researchers have ...

Mosasaurs, those large marine reptiles from the long-gone Cretaceous world, were quite picky in their choice of diet. Researchers came to this conclusion after studying the wear marks on mosasaur ...

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This story is part 10 of the AL.com series “Ancient Alabama,” examining the natural forces that made Alabama what it is over the past 500 million years, and how those forces still shape the state ...

JACKSONVILLE, Fla. — The world was a drastically different place 90 million years ago, and Saturday on Good Morning Jacksonville, UNF faculty member Dr. Barry Albright gave viewers a glimpse into what ...