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Machairodontinae
Machairodontinae is an extinct subfamily of carnivoran mammals of the family Felidae (true cats). They were endemic to Asia, Africa, North America, South America, and Europe from the Miocene to Pleistocene living from about 23 million until about 11,000 years ago.〔(Paleobiology Database: ''Machairodontinae'' Basic info ).〕
The Machairodontinae contain many of the extinct predators commonly known as "saber-toothed cats", including the famed genus ''Smilodon'', as well as other cats with only minor increases in the size and length of their maxillary canines. The name means "dagger-tooth", from Greek μάχαιρα (''machaira''), dagger. Sometimes, other carnivorous mammals with elongated teeth are also called saber-toothed cats, although they do not belong to the felids. Besides the machairodonts, saber-toothed predators also arose in Nimravidae, Barbourofelidae, Creodonta (Machaeroidinae) and even in a group of sparassodont metatherians (Thylacosmilidae).〔Lars W. van den Hoek Ostende, Michael Morlo, Doris Nagel: ''Fossils explained 52 Majestic killers: the sabre-toothed cats.'' Blackwell Publishing Ltd, Geology Today, Vol. 22, No. 4, July–August 2006 (online )〕
==Evolution==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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