Robbins Fossil Quarry (Miocene of the United States)

Where: Kern County, California (35.1° N, 117.1° W)

• Paleocoordinates: 39.1° N, 111.9° W (Wright 2013)

• coordinate based on nearby landmark

When: Barstow Formation, Barstovian (16.3 - 12.5 Ma)

• bone from quarry directly dated

Environment/lithology: terrestrial; mudstone

• mudstone that contains silicified roots and root clusters

Size class: macrofossils

Collection methods: reposited at San Bernardino County Museum

Primary reference: R. E. Reynolds. 2020. Two fossil accumulations in the Upper Barstow Formation, Mud Hills, Mojave Desert, CA. 2020 Desert Symposium Field Guide and Proceedings 57-59 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 214888: authorized by Patricia Holroyd, entered by Patricia Holroyd on 20.10.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Soricomorpha - Soricidae
Paradomnina cf. relictus Hutchison 1966 shrew
1 MNI
 Carnivora - Felidae
Pseudaelurus intrepidus Leidy 1858 cat
1 MNI
Nimravides sp. Kitts 1958 cat
2 MNI
 Carnivora - Canidae
Leptocyon sp. Matthew 1918 canine
2 MNI
Aelurodon asthenostylus Wang et al. 1999 bone-crushing dog
1 MNI
Paratomarctus temerarius Leidy 1858 bone-crushing dog
1 MNI
Cynarctus galushai Wang et al. 1999 bone-crushing dog
4 MNI
 Carnivora - Mustelidae
Mustelidae indet. Fischer 1817 mustelid carnivore
2 MNI
 Perissodactyla - Rhinocerotidae
Peraceras sp. Cope 1880 rhinoceros
1 MNI
 Perissodactyla - Equidae
Scaphohippus intermontanus Merriam 1915 horse
4 MNI
Scaphohippus sumani Merriam 1915 horse
5 MNI
 Artiodactyla - Camelidae
Aepycamelus sp. Macdonald 1956 camel
3 MNI
 Artiodactyla - Antilocapridae
Merycodus sp. Leidy 1854 pronghorn
6 MNI
 Rodentia - Sciuridae
Tamias ateles Hall 1930 chipmunk
1 MNI
Miospermophilus sp. Black 1963 squirrel
1 MNI
 Rodentia - Cricetidae
Copemys barstowensis Lindsay 1972 rodent
1 MNI
Copemys longidens Hall 1930 rodent
8 MNI
Copemys cf. tenuis Lindsay 1972 rodent
4 MNI
 Rodentia - Heteromyidae
Perognathus minutus James 1963 pocket mouse
1 MNI
Cupidinimus lindsayi Barnosky 1986 rodent
1 MNI
Cupidinimus halli Wood 1936 rodent
2 MNI
 Rodentia - Geomyidae
Mojavemys lophatus Lindsay 1972 pocket gopher
1 MNI
 Lagomorpha - Leporidae
Hypolagus parviplicatus Dawson 1958 rabbit
2 MNI