Litopterna

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Litopterna

[‚lid·əp′tər·nə]
(paleontology)
An order of hoofed, herbivorous mammals confined to the Cenozoic of South America; characterized by a skull without expansion of the temporal or squamosal sinuses, a postorbital bar, primitive dentition, and feet that were three-toed or reduced to a single digit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
His unfamiliarity with research can be seen with the Litopterns, an extinct order of mammals whose legs had similarities to those of the horse.
Before this, even larger ancient mammals such as Brontotheres (30 M b.p.), Indricotheres and Chalicotheres (20 M b.p.), and Litopterns (10 M b.p.) must have imposed important evolutionary pressures on the vegetation.