James, Gideon T. Department of Earth Sciences, East Texas State University, Commerce, Texas.
Olson, Everett C. Formerly, Department of Biology, University of California, Los Angeles, California.
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An order of large, primitive, digitigrade, hoofed, tapirlike mammals with relatively short, slender limbs and five-toed feet with broad, flat phalanges. Members of the order Xenungulata (xenungulates) are restricted to the Paleocene deposits of Brazil and Argentina. Only one genus (Carodnia) constitutes the single family (Carodniidae) in the order. See also: Eutheria; Mammalia; Paleocene
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