Trigonias
Trigonias is an extinct genus of rhinoceros from the late Eocene some 35 million years ago of North America.
Trigonias was about 2.1 m long and, despite lacking horns, looked a lot like modern rhinos. Its front legs had five toes, the fifth of which was vestigial.
A specimen of T. osborni was estimated to have a weight of about 391.4 kg.
