Thomas E. Williamson · 3 obras en el catálogoObrasLLets Look at DinosaursLets Look at DinosaursMMegalesthonyx Hopsoni (Mammalia: Tillodontia) from the earlyMegalesthonyx Hopsoni (Mammalia: Tillodontia) from the early Bridgerian (Gardnerbuttean) of the Wind River Formation, northeastern Wind River Basin, WyomingMMeniscotherium (Mammalia, "Condylarthra") from the PaleoceneMeniscotherium (Mammalia, "Condylarthra") from the Paleocene-Eocene of western North America
MMegalesthonyx Hopsoni (Mammalia: Tillodontia) from the earlyMegalesthonyx Hopsoni (Mammalia: Tillodontia) from the early Bridgerian (Gardnerbuttean) of the Wind River Formation, northeastern Wind River Basin, Wyoming
MMeniscotherium (Mammalia, "Condylarthra") from the PaleoceneMeniscotherium (Mammalia, "Condylarthra") from the Paleocene-Eocene of western North America