smiledon californicus

Noun
  1. North American sabertooth;
    Culmination of sabertooth development (synset 102133577)
    is a type of: saber-toothed tiger, sabertooth - any of many extinct cats of the Old and New Worlds having long swordlike upper canine teeth; from the Oligocene through the Pleistocene
    belongs to: genus smiledon, smiledon - saber-toothed tigers

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