Stenailurus is an extinct genus of metailurin machairodontine (saber-toothed) cat from the Late Miocene (the Turolian, specifically) of Spain.

Niels Steensen, considered the father of paleontology, combined with the Greek αἴλουρος/ailurus meaning "cat".

The specific name teilhardi honors paleontologist Pierre Teilhard de Chardin.

[1] In 2014, a study describing the genus Yoshi compares the morphology of teeth from multiple metailurines.

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