These Fossil Mummies Reveal a Brutal World Long Before T. Rex Lived

Two Lystrosaurus fossils have been found in the Karoo Basin in South Africa. The animals were four-legged herbivore with a beaked snout and two pointy tusk-like teeth. The skin almost matched what paleontologists predicted: the animal didn’t have hair, as evidenced by the lack of hair follicles, but it wasn’t scaly, either. The authors believe that the position and age at which these animals died are clues that they collapsed near a dried-up water source.

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