Revision of the late Oligocene dwarfed leptauchenine oreodont Sespia (Mammalia: Artiodactyla) - 2004
A new hyopsodontid (Mammalia, Condylarthra) from the early Eocene of Mongolia - 2004
A new species of Tribosphenomys (Mammalia: Rodentiformes) from the Paleocene of Mongolia - 2004
Sarcodontinae, a new subfamily of micropternodontid insectivores from the early Paleocene-middle Eocene of Asia - 2004
Achaenodon (Mammalia, Artiodactyla) from the Eocene Clarno Formation, Oregon, and the Age of the Hancock Quarry Local Fauna - 2004
Emended genus description and a new species of Hypisodus (Artiodactyla: Ruminantia: Hypertragulidae) - 2004