Fossil unearthed in North Dakota could help solve an evolutionary mystery
By Mindy Weisberger, CNN (CNN) — 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 species of a massive, meat-eating marine reptile known as a mosasaur, which
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