en.m.wikipedia.org/wiki/Inostrancevia

smithsonianmag.com/…/during-the-great-dying-this-…

Inostrancevia was a type of synapsid called a gorgonopsian—a group of saber-toothed beasts. It was about the size of a tiger but vaguely reptilian in appearance, with leathery skin like a rhinoceros.