Machairodus

Machairodus was a genus of large machairodontine saber-toothed cats that lived in Europe, Asia, Africa and North America during the late Miocene. The fossil species assigned to the genus Machairodus were divided by Turner into two grades of evolutionary development - M. aphanistus and the North American `Nimravides` catacopis representing the mo.....
Found on http://en.wikipedia.org/wiki/Machairodus

Machairodus

• (n.) A genus of extinct mammals allied to the cats, and having in the upper jaw canine teeth of remarkable size and strength; -- hence called saber-toothed tigers.
Found on http://thinkexist.com/dictionary/meaning/machairodus/
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