Riverside County Landfill (Site 311) ( of the United States)

Where: Riverside County, California (33.9° N, 117.0° W: paleocoordinates 33.7° N, 116.0° W)

• coordinate based on political unit

When: San Timoteo Formation, Blancan (4.9 - 1.8 Ma)

• said to be Blancan

Environment/lithology: terrestrial

Primary reference: L. B. Albright. 1999. Magnetostratigraphy and biochronology of the San Timoteo Badlands, southern California, with implications for local Pliocene–Pleistocene tectonic and depositional patterns. Geological Society America Bulletin 111(9):1265-1293 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 19740: authorized by John Alroy, entered by John Alroy on 19.05.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• in a normal magnetic polarity interval
generically identifiable NISP 46
Mammalia
 Rodentia - Geomyidae
Thomomys gidleyi1 Wilson 1933 pocket gopher
 Rodentia - Heteromyidae
Dipodomys sp. Gray 1841 kangaroo rat
sp. C according to Albright 1999c;
Perognathinae indet.2 Coues 1875 rodent
Prodipodomys sp. Hibbard 1939 rodent
Prodipodomys timoteoensis n. sp.1 Albright 1999 rodent
includes additional dipodomyine said to be new
 Rodentia - Cricetidae
"Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat
large-sized "S. minor"
Neotoma fossilis1 Gidley 1922 pack rat
Peromyscus cf. hagermanensis1 Hibbard 1962 deer mouse
Peromyscus maximus1 Albright 1999 deer mouse
Peromyscus ? baumgartneri Hibbard 1954 deer mouse
 Lagomorpha - Leporidae
Sylvilagus sp. Gray 1867 cottontail rabbit