A saber-toothed meat-eater that likely had tough skin like a rhino and ran on all fours, the inostrancevia was the largest gorgonopsian, a group of proto-mammals that served as top predators in the years before the dinosaurs.
NewsletterAbout 250 million years ago, widespread volcanic eruptions changed the earth’s atmosphere and thus its climate, setting off “The Great Dying,” otherwise known as the. Some nine out of 10 species disappeared over the course of about a million years, during which herbivores and predators alike jockeyed for resources, including the formidable inostrancevia.
The researchers aren’t sure why inostrancevia traveled so far from its original habitat, or how long the migration took. found. Predators there had served as canaries in the coal mine, the researchers say, and after leaving a fossil record, inostrancevia died out, too.Overall, the top predator role in the basin changed four times in less than 2 million years around the Permian extinction, “which is unprecedented in the history of life on land,” says co-author Christian Kammerer, a research curator of paleontology at the North Carolina Museum of Natural Sciences, in a press release.
“Think about wolves in Europe or tigers in Asia, species which tend to be slow to reproduce and grow and require large geographic areas to roam and hunt prey,” says Kammerer. “Apex predators in modern environments tend to […] be among the first species that are locally extirpated.”
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