Date: February 5, 2014
Source: University of Otago
Summary: The pre-Ice Age marine mammal community of the North Pacific formed a strangely eclectic scene, new research reveals. Studying hundreds of fossil bones and teeth excavated from the San Francisco Bay Area's Purisima Formation, scientists have put together a record of 21 marine mammal species including dwarf baleen whales, odd double-tusked walruses, porpoises with severe underbites and a dolphin closely related to the now-extinct Chinese river dolphin.
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