New Miocene mammalian faunas from west central Nevada

Four new fossil mammalian assemblages are now recognized from west central Nevada. The late Barstovian or earliest Clarendonian Eagle-Picher Mine Site assemblage was recovered from the upper sedimentary member of the ?Desert Peak Formation exposed in the northeastern Virginia Range of Storey County and consists of the following taxa; Camelidae, gen. indet. and Rhinocerotidae, gen. indet. The ?Clarendonian Churchill Valley Local Fauna and Clarendonian or Hemphillian Churchill Narrows Site assemblage were recovered from correlatives of the type Coal Valley Formation exposed along the southern flanks of the Virginia Range and in the vicinity of the Churchill Narrows area, respectively. The Churchill Narrows Site assemblage consists of the following taxa: Rhinocerotidae, gen. indet.; Camelidae, gen. indet. (small-sized); and Camelidae, gen. indet. (large-sized). The Churchill Valley Local Fauna consists of the following taxa: Leporidae, gen. indet.; cf. Mustelidae, gen. indet.; Teleoceras sp. indet.; Dinohippus sp. indet.; Camelidae, gen. indet. (small-sized); and Camelidae, gen. indet. (large-sized). The late Hemphillian Silver Springs Local Fauna was recovered from outcrops of the Truckee Formation exposed in the southeastern Virginia Range of Lyons and Churchill counties. It is the first biostratigraphically datable fauna from the upper member of the formation and consists of the following taxa: Lepoides cf. lepoides; Hypolagus ringoldensis; Hypolagus tedfordi; Hypolagus sp.; Pliotaxidea sp. indet; Teleoceras sp. indet.; Dinohippus sp. indet.; Hemiauchenia vera; Camelidae, gen. indet. (medium-sized); and Antilocapridae, gen. indet.