Faunal lists—Middle Paleocene: Torrejonian
Class Mammalia
Multituberculata
_Ptilodus_
_Neoplagiaulax_
_Ectypodus_
Insectivora
_Leptacodon_
_Aphronorus_
Primates
_Torrejonia_
_Pronothodectes_
Condylarthra
_Chriacus_
_Tricentes_
_Promioclaenus_
_Litaletes_
_Haplaletes_
Late Paleocene: Tiffanian
Multituberculata
_Ptilodus?_
Primates
_Plesiadapis_
Condylarthra
_Thryptacodon_
_Claenodon_
_Litomylus_
_Haplaletes_
_Gidleyina_
_Phenacodus_
Carnivora
_Didymictis_
Pantodonta
Genus indeterminant.
Early Eocene: Graybullian
Primates
_Pelycodus_
Tillodontia
_Esthonyx_
Rodentia
_Paramys_
Creodonta
_Proviverra_
Carnivora
_Didymictis_
_Vassacyon_
Condylarthra
_Pachyaena_
_Haplomylus_
_Hyopsodus_
_Phenacodus_
_Meniscotherium?_
Pantodonta
_Coryphodon_
Perissodactyla
_Hyracotherium_
Artiodactyla
_Diacodexis_
Early Eocene: Lysitean
Insectivora
_Diacodon_
Primates
_Pelycodus_
_Microsyops_
Tillodontia
_Esthonyx_
Rodentia
_Paramys_
_Reithroparamys_
Creodonta
_Proviverra_
Carnivora
_Didymictis_
_Vulpavus_
Condylarthra
_Pachyaena?_
_Hyopsodus_
_Phenacodus_
_Meniscotherium?_
Pantodonta
_Coryphodon_
Perissodactyla
_Hyracotherium_
_Heptodon_
Artiodactyla
_Protodichobune_
Early Eocene: Wasatchian (general)
Chiroptera
_Icaronycteris_
Late Middle Eocene: Late Bridgerian
Marsupialia
_Peratherium_
Insectivora
_Apatemys_
_Nyctitherium_
_Scenopagus_
_Talpavus_
Primates
_Hemiacodon_
_Omomys_
_Notharctus_
Condylarthra
_Hyopsodus_
Rodentia
_Leptotomus_
_Microparamys_
_Mysops_
_Paramys_
_Pauromys_
_Sciuravus_
_Thisbemys_
Dinocerata
_Uintatherium_
Perissodactyla
_Orohippus_
_Hyrachyus_