El Casco (Pleistocene of the United States)

Also known as SBCM 5.3.3; Site 350

Where: Riverside County, California (33.9° N, 117.0° W: paleocoordinates 33.9° N, 116.7° W)

• coordinate based on political unit

When: upper Member (San Timoteo Formation), Irvingtonian (1.8 - 0.3 Ma)

• said to be early Irvingtonian

Environment/lithology: terrestrial

Primary reference: R. E. Reynolds and W. A. Reeder. 1991. The San Timoteo Formation, Riverside County, California. San Bernardino County Museum Association Quarterly 38(3):44-48 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 20319: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• stratigraphy discussed by Albright 1999b; specimen counts given by Albright 1999c exclude certain F:AM and SBCM material

see also Frazier 1981
Show authors, comments, and common names
Mammalia
 Megatherioidea - Megalonychidae
Megalonyx sp.
Megalonyx sp. Harlan 1825 edentate
 Rodentia - Heteromyidae
Dipodomys sp.2
Dipodomys sp.2 Gray 1841 kangaroo rat
sp. D
 Rodentia - Geomyidae
Thomomys sp.2
Thomomys sp.2 Wied-Neuwied 1839 pocket gopher
 Rodentia - Erethizontidae
Erethizon cascoensis n. sp.
Erethizon cascoensis n. sp. White 1970 North American porcupine
see Frazier 1981
 Rodentia - Cricetidae
Mictomys kansasensis3, Neotoma sp.2, Arvicolinae indet.4, Ondatra idahoensis1
Mictomys kansasensis3 Hibbard 1952 bog lemming
Neotoma sp.2 Say and Ord 1825 pack rat
includes "N. prealbigula"; "N. prelepida"; and "N. prefuscipes"
Arvicolinae indet.4 Gray 1821 vole
"primitive"
Ondatra idahoensis1 Wilson 1933 muskrat
same i.d. given by Frazier 1981; "O. annectens" according to Repenning 1987, Reynolds and Reeder 1991
 Lagomorpha - Leporidae
Leporidae indet.
Leporidae indet. Fischer de Waldheim 1817 rabbit
 Carnivora - Canidae
Canis edwardii
Canis edwardii Gazin 1942 canine
 Carnivora - Ursidae
Arctodus sp.
Arctodus sp. Leidy 1854 bear
 Carnivora - Mustelidae
Mustelidae indet.
Mustelidae indet. Fischer 1817 mustelid carnivore
 Artiodactyla - Camelidae
Camelops cf. hesternus
Camelops cf. hesternus Leidy 1873 camel
 Artiodactyla - Cervidae
Odocoileus hemionus3
Odocoileus hemionus3 Rafinesque 1817 mule deer
 Perissodactyla - Tapiridae
"Tapirus cf. haysii" = Tapirus (Helicotapirus) haysii3
"Tapirus cf. haysii" = Tapirus (Helicotapirus) haysii3 Leidy 1860 tapir
 Perissodactyla - Equidae
"Equus simplicidens" = Plesippus simplicidens2
"Equus simplicidens" = Plesippus simplicidens2 Cope 1892 horse
1Albright 1999; 2Albright 1999; 3Alroy 2002; 4Bell and Bever 2006