The two thalattosaurs, discovered by separate groups of scientists, are from different sides of the world — one from central Oregon and the other from China's southwestern Guizhou province. "They're kind of known for being weird," said Eric Metz, a graduate student in the geosciences department at the University of Alaska Fairbanks. For instance, some thalattosaurs had no teeth, while others, including the new species in Oregon, sported teeth on the roofs of their mouths, which likely helped them crush mollusks, Metz told Live Science.
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