Brontotherium. Computer artwork of a Brontotherium on an open plain with birds on its back. This extinct mammal belonged to the same group as horses, rhinos and tapirs and lived during the Eocene epoch (58 to 30 million years ago). Modern rhinos have a symbiotic relationship with birds (known as oxpeckers or tick birds) that eat parasites they find on the rhino's skin. No doubt similar symbiotic relationships existed between birds and the megafauna of the Eocene.
October 7th, 2018
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