[tahy-tan-uh-theer, tahyt-n-uh-]
any member of the extinct mammalian family Brontotheriidae, large, horned relatives of the horse common in North America and Eurasia from the Eocene to the Oligocene epochs.

< Neo-Latin Titanotherium genus name, equivalent to Greek Tītā́n Titan + -o- -o- + thēríon -there

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World English Dictionary
titanothere (taɪˈtænəˌθɪə)
See also chalicothere any of various very large horse-like perissodactyl mammals of the genera Menodus, Brontotherium, etc, that lived in Eocene and Oligocene times in North America
[C19: from New Latin Tītānotherium giant animal, from Greek Titan + thēr wild beast]

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American Heritage
Science Dictionary
titanothere   (tī-tān'ə-thîr')  Pronunciation Key 
Any of various extinct herbivorous hoofed mammals of the family Brontotheriidae of the Eocene and Oligocene Epochs. Titanotheres were mostly large animals resembling rhinoceroses and had massive skulls with horns and stout bodies.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


any member of an extinct group of large-hoofed mammals that originated in Asia or North America during the early Eocene Epoch (some 50 million years ago). Titanotheres, more properly called "brontotheres," became extinct during the middle of the Oligocene Epoch (some 28 million years ago). Most were large and fed mainly on soft vegetation. Their skulls were massive and frequently adorned with large bony protuberances covered in skin that may have been used in intraspecific combat or as defensive weapons against predators. The bodies were bulky with strong, pillarlike limbs. The remains of titanotheres are abundant in the geologic record, and the different forms must have been locally numerous; it is possible that they moved about in herds.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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