Black Bear Quarry I (Miocene of the United States)

Also known as SDSM V-672

Where: Bennett County, South Dakota (43.2° N, 101.8° W: paleocoordinates 43.9° N, 97.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Batesland Formation, Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

Size class: mesofossils

Collected by SDSM in 1967; reposited in the SDSM

Collection methods: bulk, sieve

• "about one-half ton of productive matrix" (Green 1972)

Primary reference: J. E. Martin. 1976. Small mammals from the Miocene Batesland Formation of South Dakota. Contributions to Geology, University of Wyoming 14(2):69-98 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17877: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rodentia - Cricetidae
Leidymys sp. Wood 1936 mouse
Paciculus cf. montanus Black 1961 mouse
 Rodentia - Sciuridae
Protospermophilus sp. Gazin 1930 squirrel
cf. Miospermophilus sp. Black 1963 squirrel
 Rodentia -
Geomyoidea indet. Bonaparte 1845 rodent
 Rodentia - Eomyidae
Eomyidae indet. Winge 1887 rodent
 Rodentia - Geomyidae
cf. Gregorymys sp. Wood 1936 pocket gopher
 Rodentia - Florentiamyidae
cf. Sanctimus sp. Macdonald 1970 rodent
 Rodentia - Heteromyidae
Dikkomys matthewi Wood 1936 rodent
Schizodontomys harkseni Macdonald 1970 rodent
 Rodentia - Castoridae
Castoridae indet. Gray 1821 beaver
see discussion in Albright 1996
 Rodentia - Zapodidae
"Plesiosminthus cf. clivosus" = Schaubeumys clivosus, Schaubeumys galbreathi
"Plesiosminthus cf. clivosus" = Schaubeumys clivosus Galbreath 1953 jumping mouse
Schaubeumys galbreathi Wilson 1960 jumping mouse
 Lagomorpha - Leporidae
 Lagomorpha - Ochotonidae
Gripholagomys lavocati Green 1972 pika
 Lipotyphla - Erinaceidae
Parvericius cf. montanus Koerner 1940 hedgehog
 Lipotyphla - Talpidae
Mystipterus cf. martini Wilson 1960 mole
Scalopoides cf. isodens Wilson 1960 mole
 Tribosphenida - Plesiosoricidae
Plesiosorex coloradensis Wilson 1960 placental
 Tribosphenida - Proscalopidae
Mesoscalops sp. Reed 1960 placental
 Didelphimorphia - Didelphidae
Didelphidae indet. Gray 1821 opossum