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2. A new study of the anthracotheres (Mammalia, Artiodactyla) from Pondaung Formation, Myanmar: Systematic implications;Palaeovertebrata,2008
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4. The oldest North American primate and mammalian biogeography during the Paleocene-Eocene Thermal Maximum;Beard;Proc. Natl. Acad. Sci. USA,2008
5. Intercontinental dispersal of Holarctic land mammals near the Paleocene/Eocene boundary: Paleogeographic, paleoclimatic and biostratigraphic implications;Beard;Bull. Soc. Geol. Fr.,1999