Gazin, C.L., 1942, The late Cenozoic vertebrate faunas from the San Pedro Valley, Arizona: U.S. National Museum Proceedings, v. 92, p. 475-518.
Gazin, C.L.
U.S. National Museum Proceedings, v. 92, p. 475-518.
Paleontology, Vertebrate, St. David fm(fm of St. David area) - Pliocene/Pleistocene - Gila assemblage,