Highway 138 Borrow Cut (Miocene of the United States)

Also known as SBCM 1.103.53, 125-136; Wye

Where: San Bernardino County, California (34.8° N, 117.0° W: paleocoordinates 34.1° N, 112.3° W)

• coordinate based on political unit

When: upper Unit 1 Member (Crowder Formation), Barstovian (16.0 - 13.6 Ma)

Environment/lithology: terrestrial

Primary reference: R. E. Reynolds. 1991. San Bernardino County Museum Association Quarterly 38(3) [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 19369: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes at least 13 localities spanning 150' of section
Mammalia
 Rodentia - Sciuridae
"Tamiini indet." = Marmotini squirrel
Petauristodon cf. mathewsi James 1963 squirrel
 Rodentia -
Geomyoidea indet. Bonaparte 1845 rodent
 Rodentia - Heteromyidae
Trogomys sp. Reeder 1960 rodent
said to be new
Proheteromys sulculus Wilson 1960 rodent
Perognathus cf. minutus James 1963 pocket mouse
Perognathus cf. furlongi Gazin 1930 pocket mouse
 Rodentia - Zapodidae
Schaubeumys sp. Wood 1935 jumping mouse
 Perissodactyla - Tapiridae
Tapiridae indet. Gray 1821 tapir
 Perissodactyla - Equidae
Equidae indet. Gray 1821 horse
large
Parapliohippus cf. carrizoensis Dougherty 1940 horse
Archaeohippus cf. mourningi Merriam 1913 anchitheriine horse
 Tribosphenida - Heterosoricidae
Paradomnina cf. relictus Hutchison 1966 placental
 Carnivora - Mustelidae
Miomustela sp. Hall 1930 mustelid carnivore
Leptarctus cf. ancipidens White 1941 mustelid carnivore
 Carnivora - Canidae
Canidae indet. Fischer 1817 canid
 Ungulata - Tayassuidae
Tayassuinae indet. Palmer 1897 peccary
"Dyseohyus"
 Ungulata - Camelidae
Camelidae indet. Gray 1821 camel
cf. Michenia sp. Frick and Taylor 1971 camel
cf. Procamelus sp. Leidy 1858 camel
cf. Aepycamelus sp. Macdonald 1956 camel
 Ungulata - Palaeomerycidae
Palaeomerycidae indet. Lydekker 1883 ruminant