The 42-million-year-old fossil specimens belong to the newly named Diegoaelurus, or 'San Diego's cat'
A newly discovered saber-toothed catlike predator that hunted in the forests and coastal areas of this region 42 million years ago has been given the name Diegoaelurus, or “San Diego’s cat,” the San Diego Natural History Museum announced today.
San Diego Natural History Museum visitors may have seen exhibits featuring Smilodon, a large saber-toothed cat that roamed North America during the Pleistocene era, about 10,000 years ago. By comparison, the far-more-ancient Diegoaelurus was much smaller, about the size of a bobcat, and similar in style to the fossa of Madagascar, a cousin to the mongoose, Poust said.An artist’s rendering of the newly discovered Diegoaelurus, an ancient saber-toothed mammal native to San Diego County.
“Nothing like this had existed in mammals before,” he said. “A few mammal ancestors had long fangs, but Diegoaelurus and its few relatives represent the first catlike approach to an all-meat diet, with saber-teeth in front and slicing scissor teeth called carnassials in the back. It’s a potent combination that several animal groups have independently evolved in the millions of years since.”
Diegoaelurus comes from the Eocene epoch, which stretched from 56 million to 34 million years ago. The region had a tropical rainforest-like climate and was vastly different geologically than today. The Diegoaelurus is the third major scientific discovery that Poust has made in the field of paleontology. He discovered a feathered dinosaur in China called the Wulong bohaiensis from 120 million years ago. He also published a paper on the fossil of a dinosaur with unlaid eggs still inside its skeleton, a rare opportunity to learn about oviraptorosaurs from the Cretaceous period.
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