''Lambdotherium'' ("wave beast") is a genus of North American

brontothere Brontotheriidae is a family of extinct mammals belonging to the order Perissodactyla, the order that includes horses, rhinoceroses, and tapirs. Superficially, they looked rather like rhinos, although they were actually more closely related to h ...

. Brontotheres Eocene odd-toed ungulates Eocene mammals of North America

References

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