Uintatherium anceps
Taxon
Uintatherium anceps (Marsh, 1872)
Reconstructed length
~3.5 m (11 feet)
View
Left lateral
Drawing
© Scott Hartman
Drawn
2010, revised 2018
Clade
- Synapsida
- Therapsida
- Mammalia
- Placentalia
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Uintatherium was one of the earliest large mammals, weighing up to 4.5 tonnes. They belong to a group named Dinocerata, which was part of the initial mammal radiation into new ecological niches after the extinction of the non-avian dinosaurs at the end of the Mesozoic. Uintatherium appeared in the Paleocene (the first epoch after the K/Pg extinction) and went extinct in the Middle Eocene, with more familiar herbivore groups eventually occupying mammalian large-herbivore roles.
