An extinction event about 19 million years ago decimated shark populations by up to 90%, researchers say.
In a paper published Thursday in the journal Science, Yale University oceanographer and paleontologist Elizabeth Sibert and Leah Rubin, then an undergraduate student at the College of the Atlantic in Bar Harbor, Maine, wrote that shark populations have still not recovered from the abrupt die-off.
GREAT WHITE SHARK POPULATION ALONG CALIFORNIA COAST BOOMING
By studying shark teeth and…
