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Giant big mac saber7/9/2023 ![]() Researchers used to classify them in the nimravid family, a group known as "false saber-toothed cats." But subtle differences caused researchers to place Barbourofelids in their own family.īarbourofelids appear in the fossil record from about 20 million to 10 million years ago, mostly in Eurasia and Africa, although at least one known genus lived in North America, Tseng said. (Image credit: Kristen Grace | Florida Museum of Natural History)Īnimals in the Barbourfelidae family certainly look catlike, but they aren't true cats. " it is possible both sexes had these teeth, with females fighting for the best sites to make their nests, called redds," Davis said. The filter feeder likely used its long teeth to fight for access to mates, slashing sideways at rival males, Davis said. rastrosus lived in the Pacific during the late Miocene and possibly the early Pliocene, from about 13 million to 4 million years ago. Instead, researchers favor the names "spike tooth" and "giant salmon," because it was more than 6.5 feet (2 m) long and weighed about 660 lbs. In fact, few experts call the fish ( Oncorhynchus rastrosus) a saber-toothed animal anymore. The saber-toothed salmon's teeth weren't oriented in a vertical saber-tooth fashion, but stuck out the sides of the fish's mouth like a scythe, said Edward Davis, the curator of fossil collections for the University of Oregon Museum of Natural and Cultural History, and an assistant professor of geology at the University of Oregon. (Image credit: University of Oregon Museum of Natural and Cultural History)
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