Who's Your Daddy? For Great White Shark, Maybe It's Mako

LiveScience.com
Who's Your Daddy? For Great White Shark, Maybe It's Mako
Dana Ehret, lead author of a University of Florida study on the origin of great white sharks, analyzes a 4.5-million-year-old fossil at Gordon Hubbell's private gallery in Gainesville, Fla., on March 6, 2009.
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