what is smilodon?
is a genus of the extinct machairodont subfamily of the felids.
Smilodon
 is a genus of the extinct machairodont subfamily of the felids. 
when did the saber toothed cat become extinct It became extinct 10,000 years ago in the Quaternary extinction event.
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Smilodon [SEP] Introduction
Smilodon is a genus of the extinct machairodont subfamily of the felids. It is one of the most famous prehistoric mammals and the best known saber-toothed cat. Although commonly known as the saber-toothed tiger, it was not closely related to the tiger or other modern cats. "Smilodon" lived in the Americas during the Pleistocene epoch (2.5 mya – 10,000 years ago). The genus was named in 1842 based on fossils from Brazil; the generic name means "scalpel" or "two-edged knife" combined with "tooth". Three species are recognized today: S. gracilis, S. fatalis, and S. populator. The two latter species were probably descended from "S.