Arroyo Seco (CU 46) ( of the United States)

Where: San Diego County, California (32.9° N, 117.1° W: paleocoordinates 32.7° N, 116.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Huesos/Tapiado Member (Palm Spring Formation), Blancan (4.9 - 1.8 Ma)

• said to be Blancan

Environment/lithology: terrestrial

Primary reference: M. L. Cassiliano. 1999. Biostratigraphy of Blancan and Irvingtonian mammals in the Fish Creek-Vallecito Creek section, southern California, and a review of the Blancan-Irvingtonian boundary. Journal of Vertebrate Paleontology 19(1):169-186 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 20114: authorized by John Alroy, entered by John Alroy on 21.09.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Carnivora - Procyonidae
Bassariscus sp. Coues 1887 ringtail
 Carnivora - Felidae
Felinae indet. Trouessart 1885 cat
 Perissodactyla - Equidae
"Equus sp." = Equus, "Equus (Dolichohippus) sp." = Equus, "Equus simplicidens" = Plesippus simplicidens
"Equus sp." = Equus Linnaeus 1758 horse
"Equus (Dolichohippus) sp." = Equus Linnaeus 1758 horse
"Equus simplicidens" = Plesippus simplicidens Cope 1892 horse
 Lagomorpha - Leporidae
Sylvilagus sp. Gray 1867 cottontail rabbit
 Rodentia - Geomyidae
Nerterogeomys anzensis Becker and White 1981 pocket gopher
 Rodentia - Heteromyidae
Perognathinae indet. Coues 1875 rodent