A species-level revision of the North American brontotheres Eotitanops and Palaeosyops (Mammalia, Perissodactyla)

Abstract

A systematic revision based on a morphological and statistical analysis recognizes two species of Eotitanops (E. borealis, and E. gregoryi) and three species of Palaeosyops (P. paludosus, P. fontinalis, and P. robustus) as valid. The name P. robustus is selected as having priority over the name P. laticeps under the Principle of First Reviser. Eotitanops is the only member of the subfamily Eotitanopinae and Palaeosyops is the only member of the subfamily Palaeosyopinae. Copyright © 2010 Magnolia Press.