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Temporal range: Eocene–Eocene
An artist's illustration of Protitanotherium emarginatum
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Brontotheriidae
Subfamily: Brontopinnae
Genus: Protitanotherium
Gregory, 1912
Species: P. emarginatum

Protitanotherium is a Brontothere from Eocene North America.