Warren (Neogene of the United States)

Also known as UCR RV-7702
DUPLICATE REF 2893 or 2894

Where: Kern County, California (35.3° N, 118.5° W: paleocoordinates 35.2° N, 115.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Horned Toad Formation, Late/Upper Hemphillian (10.3 - 4.9 Ma)

Environment/lithology: terrestrial; lithology not reported

Primary reference: R. E. Reynolds, R. L. Reynolds, and A. F. Pajak, III. 1991. San Bernardino County Museum Association Quarterly 38(3) [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 19604: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• apparently also includes UCMP V-2503 and UCR RV-6834
mostly from Mbr. 2 of fm., some specimens from mbrs. 3 and 4
initial report of May 1981 provided an incomplete list
Mammalia
 Rodentia - Cricetidae
Cricetidae indet.1 Fischer von Waldheim 1817 mouse
"Bensonomys aff. gidleyi" = Calomys (Bensonomys) gidleyi1 Baskin 1978 mouse
Antecalomys cf. valensis1 Shotwell 1967 mouse
Repomys gustelyi n. sp. May 1981 mouse
see May 1981 DUPLICATE REF 2893 or 2894
Jacobsomys dailyi n. sp.2 May et al. 2011 mouse
 Rodentia - Sciuridae
cf. Spermophilus sp. Cuvier 1825 ground squirrel
DUPLICATE REF 2893 or 2894
 Rodentia - Geomyidae
Geomyidae indet. Bonaparte 1845 pocket gopher
said to be a new genus DUPLICATE REF 2893 or 2894
Prothomomys warrenensis n. sp.2 May et al. 2011 pocket gopher
 Rodentia - Heteromyidae
Perognathus sp.2 Maximillian 1839 pocket mouse
 Lagomorpha - Leporidae
Hypolagus edensis2 Frick 1921 rabbit
Hypolagus vetus Kellogg 1910 rabbit
DUPLICATE REF 2893 or 2894
 Lipotyphla - Talpidae
cf. Scapanus sp. Pomel 1848 mole
DUPLICATE REF 2893 or 2894
 Perissodactyla - Rhinocerotidae
Teleoceras sp.1 Hatcher 1894 rhinoceros
 Perissodactyla - Equidae
Dinohippus leidyanus1 Osborn 1918 horse
 Tribosphenida - Soricidae
Cryptotis sp. Pomel 1848 small-eared shrew
DUPLICATE REF 2893 or 2894
 Carnivora - Ursidae
cf. Agriotherium sp. Wagner 1837 bear
DUPLICATE REF 2893 or 2894
 Carnivora - Canidae
Borophagus cf. secundus1 VanderHoof 1931 bone-crushing dog
 Carnivora - Felidae
"Machairodus cf. coloradensis" = Amphimachairodus coloradensis
"Machairodus cf. coloradensis" = Amphimachairodus coloradensis Cook 1922 cat
DUPLICATE REF 2893 or 2894
 Proboscidea - Gomphotheriidae
Rhynchotherium aff. falconeri1 Osborn 1923 gomphothere
 Proboscidea - Mammutidae
Mammut matthewi1 Osborn 1921 mastodon
 Ungulata - Tayassuidae
Tayassuinae indet.1 Palmer 1897 peccary
 Ungulata - Camelidae
Camelidae indet.2 Gray 1821 camel
Megatylopus cf. matthewi Webb 1965 camel
DUPLICATE REF 2893 or 2894
"Hemiauchenia vera" = Pleiolama vera Matthew 1909 camel
DUPLICATE REF 2893 or 2894
 Ungulata - Antilocapridae
? Sphenophalos sp. Merriam 1909 pronghorn
may include "bovid or cervid" of Merriam 1919 from UCMP 2578 "two miles south of Warren" DUPLICATE REF 2893 or 2894