Phillips Ranch (Miocene to of the United States)

Also known as CIT 503; UCMP V-2577

Where: Kern County, California (35.3° N, 118.5° W: paleocoordinates 35.1° N, 112.6° W)

• coordinate based on political unit

When: Bopesta Formation, Hemingfordian to Hemingfordian (20.4 - 13.6 Ma)

Environment/lithology: terrestrial

Primary reference: J. P. Quinn. 1987. Stratigraphy Of The Middle Miocene Bopesta Formation, Southern Sierra Nevada, California. Contributions in Science, Natural History Museum of Los Angeles County 393:1-31 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 19478: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• only the CIT collection is stratigraphically restricted; other records could be from the 270' level
originally described by Buwalda 1916
lowest locality in section and overlies Lone Tree Basalt; underyling tuff breccia was dated at 17.1 (= 17.55) Ma (K-Ar on hornblende biotite: sample KA 478) by Evernden et al. 1964; this unit was referred to as the Kinnick Tuff and redated at 16.5 +/- 0.2 Ma (K-AAr on biotite) and 16.5 +/- 0.8 Ma (K-Ar on hornblende) by Coles et al. 1997
Mammalia
 Perissodactyla - Chalicotheriidae
Moropus sp. Marsh 1877 chalicothere
 Perissodactyla - Equidae
"Parapliohippus carrizoensis" = Parapliohippus carrizoensis1, "Merychippus tehachapiensis n. sp." = Parapliohippus carrizoensis2, Hypohippus sp.
"Parapliohippus carrizoensis" = Parapliohippus carrizoensis1 Dougherty 1940 horse
"Merychippus tehachapiensis n. sp." = Parapliohippus carrizoensis2 Dougherty 1940 horse
Hypohippus sp. Leidy 1858 anchitheriine horse
CIT 503
 Carnivora - Canidae
Paracynarctus kelloggi4 Merriam 1911 bone-crushing dog
 Carnivora - Felidae
Felidae indet. Gray 1821 cat
CIT 503
 Ungulata - Merycoidodontidae
Merychyus elegans3 Leidy 1858 oreodont
 Ungulata - Tayassuidae
"Cynorca sociale" = Marshochoerus socialis
"Cynorca sociale" = Marshochoerus socialis Marsh 1875 peccary
described by Woodburne 1969
 Ungulata - Camelidae
cf. Stenomylus sp. Peterson 1907 camel
CIT 503
Miolabis sp. Hay 1899 camel
CIT 503: "M. sp. A"
 Ungulata - Antilocapridae
Merycodontinae indet.1 Matthew 1904 pronghorn