Warren (Neogene of the United States)

Also known as UCR RV-7702; UCMP 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

Size classes: macrofossils, mesofossils

Primary reference: R. E. Reynolds, R. L. Reynolds, and A. F. Pajak, III. 1991. Blancan, Irvingtonian, and Rancholabrean(?) land mammal age faunas from western Riverside County, California. In R.E. Reynolds, D.P. Whistler (eds.), San Bernardino County Museum Association Quarterly 38(3-4):37-40 [J. Alroy/J. Alroy/M. Uhen]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
Show authors, comments, and common names
Mammalia
 Proboscidea - Gomphotheriidae
Rhynchotherium aff. falconeri1
Rhynchotherium aff. falconeri1 Osborn 1923 gomphothere
 Proboscidea - Mammutidae
Mammut matthewi1
Mammut matthewi1 Osborn 1921 mastodon
 Carnivora - Felidae
"Machairodus cf. coloradensis" = Amphimachairodus coloradensis
"Machairodus cf. coloradensis" = Amphimachairodus coloradensis Cook 1922 cat
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 Carnivora - Ursidae
cf. Agriotherium sp.
cf. Agriotherium sp. Wagner 1837 bear
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 Carnivora - Canidae
Borophagus cf. secundus1
Borophagus cf. secundus1 VanderHoof 1931 bone-crushing dog
 Artiodactyla - Camelidae
Camelidae indet.2, "Hemiauchenia vera" = Pleiolama vera, Megatylopus cf. matthewi
Camelidae indet.2 Gray 1821 camel
"Hemiauchenia vera" = Pleiolama vera Matthew 1909 camel
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Megatylopus cf. matthewi Webb 1965 camel
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 Artiodactyla - Tayassuidae
Tayassuinae indet.1
Tayassuinae indet.1 Palmer 1897 peccary
 Artiodactyla - Antilocapridae
? Sphenophalos sp.
? 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
 Perissodactyla - Rhinocerotidae
Teleoceras sp.1
Teleoceras sp.1 Hatcher 1894 rhinoceros
 Perissodactyla - Equidae
Dinohippus leidyanus1
Dinohippus leidyanus1 Osborn 1918 horse
 Theriamorpha - Soricidae
Cryptotis sp.
Cryptotis sp. Pomel 1848 small-eared shrew
DUPLICATE REF 2893 or 2894
 Theriamorpha - Talpidae
cf. Scapanus sp.
cf. Scapanus sp. Pomel 1848 mole
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 Lagomorpha - Leporidae
Hypolagus edensis2, Hypolagus vetus
Hypolagus edensis2 Frick 1921 rabbit
Hypolagus vetus Kellogg 1910 rabbit
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 Rodentia - Heteromyidae
Perognathus sp.2
Perognathus sp.2 Maximillian 1839 pocket mouse
 Rodentia - Geomyidae
Geomyidae indet., Prothomomys warrenensis n. sp.2
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 - Sciuridae
cf. Spermophilus sp.
cf. Spermophilus sp. Cuvier 1825 ground squirrel
DUPLICATE REF 2893 or 2894
 Rodentia - Cricetidae
Cricetidae indet.1, "Antecalomys cf. valensis" = Postcopemys valensis1, Repomys gustelyi n. sp., Jacobsomys dailyi n. sp.2, "Bensonomys aff. gidleyi" = Calomys (Bensonomys) gidleyi1
Cricetidae indet.1 Fischer von Waldheim 1817 mouse
"Antecalomys cf. valensis" = Postcopemys 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
"Bensonomys aff. gidleyi" = Calomys (Bensonomys) gidleyi1 Baskin 1978 mouse
1Alroy 2002; 2May et al. 2011