Fossil sperm whale tooth from the Miocene of North Carolina, USA.
Classification: Animalia, Chordata, Vertebrata, Mammalia, Artiodactyla, Cetacea, Odontoceti, Physeteroidea
Locality: quarry/mine near Aurora, eastern North Carolina, USA
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See info. at:
www.fossilguy.com/gallery/vert/mammal/marine/sperm_whale/...
and
en.wikipedia.org/wiki/Physeteroidea 