Rancho La Brisca (Pleistocene of Mexico)

Also known as UALP 7627

Where: Sonora, Mexico (29.4° N, 111.0° W: paleocoordinates 29.4° N, 111.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• said to be Sangamonian

Environment/lithology: terrestrial

Primary reference: T. R. Van Devender, A. M. Rea, and M. L. Smith. 1985. The Sangamon interglacial vertebrate fauna from Rancho la Brisca, Sonora, Mexico. Transactions of the San Diego Society of Natural History 21(2):23-55 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 20633: authorized by John Alroy, entered by John Alroy on 12.04.1997

Creative Commons license: CC BY (attribution)

Taxonomic list

• screen washed; samples from 5 m mudstone section
total mammalian NISP reported as 26, but only 24 are identified
said to be Sangamonian based on interglacial aspect of herpetofauna and co-occurrence of Bison with extinct megafauna
Show authors, comments, and common names
Mammalia
 Proboscidea - Elephantidae
Mammuthus sp.
Mammuthus sp. Brookes 1828 mammoth
 Perissodactyla - Equidae
Equus sp., Equus sp.
Equus sp. Linnaeus 1758 horse
large
Equus sp. Linnaeus 1758 horse
 Artiodactyla - Camelidae
Camelops sp.
Camelops sp. Leidy 1854 camel
 Artiodactyla - Cervidae
Odocoileus hemionus
Odocoileus hemionus Rafinesque 1817 mule deer
 Artiodactyla - Antilocapridae
Capromeryx cf. minor, Tetrameryx sp.
Capromeryx cf. minor Taylor 1911 pronghorn
Tetrameryx sp. Lull 1921 pronghorn
 Artiodactyla - Bovidae
Bison sp.
Bison sp. Hamilton-Smith 1827 bison
 Carnivora - Procyonidae
Bassariscus sp.
Bassariscus sp. Coues 1887 ringtail
 Rodentia - Cricetidae
Neotoma sp., Sigmodon sp., Onychomys sp.
Neotoma sp. Say and Ord 1825 pack rat
Sigmodon sp. Say and Ord 1825 cotton rat
Onychomys sp. Baird 1858 grasshopper mouse
 Rodentia - Heteromyidae
Dipodomys sp.
Dipodomys sp. Gray 1841 kangaroo rat