Species: Cosmopolitodus hastalis
Formation: Temblor Formation
Locality: Sharktooth Hill, Bakersfield, California
Age: Miocene, 28-11.6 million years old
A Fossil Cosmopolitodus hastalis shark tooth. This one is from the rare "fire zone" section of Sharktooth Hill.
Cosmopolitodus hastalis was a large white shark, often called a mako, whose taxonomy has been the subject of extensive debate. At various times, it was classified into the genera Oxyrhina, Isurus, Carcharodon, and finally Cosmopolitodus where it remains for now. It is commonly known as the Broad-Tooth Mako, the Extinct Giant Mako (a testament to its estimated maximum size of 23 feet!) and the Broad-Tooth White Shark (in reference to its supposed ancestry to modern White Sharks. Regardless of its taxonomy, it was an impressive shark with beautiful teeth!
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