World's Oldest Shark Fossil Found
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- Aug 5 2010 3:51 PM
MaryRose Lovgren
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- Original Source:Xpeditions
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Description
In this National Geographic News article, read about the discovery of the oldest known shark fossil. Paleontologists have unearthed in Canada a 409-million-year-old specimen of a small, primitive species that was found with its braincase, jaws, and teeth attached in their correct anatomical position. The find answers and raises important questions about the origin of sharks. Links to related stories and Web sites are also found on this page.
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Topics and Grades
Grade: 3 to 12
Topics: American Democracy, Geography, Science, Life Sciences, History-Social Science