アメリカ自然史博物館のインスタグラム(amnh) - 7月3日 22時56分

It’s a fanged #FossilFriday!
Smilodon fatalis lived in North and South America until going extinct about 10,000 years ago. About the size of a modern tiger or lion but bulkier, the cats are famous for their protruding canines, which could grow to be 18 centimeters (about 7 inches) long. Although well-preserved fossils of these cats are available to researchers—including those in the Museum’s own collection—little is known about the absolute ages at which the animals reached key developmental stages.

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