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Late Miocene Three-Toed Horse Protohippus (Mammalia, Equidae) from Southern Alabama
Bruce J. MacFadden and James L. Dobie
Journal of Paleontology
Vol. 72, No. 1 (Jan., 1998), pp. 149-152
Published by: Paleontological Society
Stable URL: http://www.jstor.org/stable/1306685
Page Count: 4
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Dental and postcranial remains of a donkey-sized, three-toed, primitive horse were collected from the "Undifferentiated Miocene" Ecor Rouge Sand (which underlies the widespread Citronelle Formation) from the Mauvilla site in southern Alabama. These fossils probably pertain to a single individual of Protohippus gidleyi Hulbert, 1988. This represents an exceedingly rare occurrence of a late Tertiary land mammal from the central Gulf Coastal Plain and allows comparisons with better-known, contemporaneous land-mammal assemblages from Florida. Based on the known biochronology of Protohippus gidleyi from other localities, and the stratigraphic position of the Mauvilla record, the age of: 1) the Ecor Rouge Sand is late Miocene (latest Clarendonian to early Hemphillian land-mammal "age"), between 9.0 to 6.5 Ma; and 2) the overlying Citronelle Formation near its type locality in southern Alabama is therefore late Miocene or younger.
Journal of Paleontology © 1998 Paleontological Society