<Li> Smilodon (Trucifelis) nebraskensis Merriam & Stock, 1932 </Li> <Li> Smilodon (Trucifelis) californicus brevipes Merriam & Stock, 1932 </Li> <Li> Smilodon trinitensis Slaughter, 1960 </Li> <Li> S. gracilis: </Li>

When did the saber toothed cat become extinct