Black Bear Quarry II (Miocene of the United States)

Also known as SDSM V-673

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: Rosebud Formation, Hemingfordian (20.4 - 16.0 Ma)

• channel deposit "is approximately 60 cm thick and about seven meters wide"

• group of beds-level stratigraphic resolution

Environment/lithology: coarse channel fill; concretionary conglomerate

• "stream channel deposit"
• "The channel base contains large pebbles up to 10 cm in diameter. Above the pebbly layer is the main fossiliferous bed. It is about 30 cm thick and is gravelly. Above it is a layer of strongly cemented concretions. Each concretion is about 20 to 30 cm long and nearly 10 cm thick. These concretions are interpreted as the result of later water table action. They contain fossils as do several centimeters of the overlying layer."

Size class: mesofossils

Collected by SDSM in 1967 - 1968; reposited in the SDSM

Collection methods: bulk, sieve,

• NISP 779

•"approximately" one ton of matrix

Primary reference: M. Green and J. E. Martin. 1976. Peratherium (Marsupialia: Didelphidae) from the Oligocene and Miocene of South Dakota. In C. S. Churcher (ed.), Athlon, Essays on Palaeontology in Honour of Loris Shano Russell: Life Sciences Miscellaneous Publications of the Royal Ontario Museum 155-168 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17878: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jason Head

Creative Commons license: CC BY (attribution)

Taxonomic list

• incorrect number V-671 (actually Flint Hill South) given by Martin and Green 1984
Reptilia
 Squamata - Colubridae
Dakotaophis greeni n. gen. n. sp.4 colubrid snake
Salvadora paleolineata4 Holman 1973 colubrid snake
Neonatrix elongata4 Holman 1973 colubrid snake
 Squamata - Loxocemidae
Ogmophis miocompactus n. sp.4 Holman 1976 Mexican burrowing snake
 Squamata - Boidae
Calamagras weigeli4 Holman 1972 dwarf boa
Pterygoboa miocenica n. gen. n. sp.4 Holman 1976 sand boa
Charina prebottae4 Brattstrom 1958 boa
 Squamata - Rhineuridae
Rhineura sepultura n. sp.5 Holman 1979 worm lizard
Mammalia
 Rodentia - Cricetidae
Cricetidae indet.7 Fischer von Waldheim 1817 mouse
smalll
Leidymys sp.7 Wood 1936 mouse
 Rodentia - Sciuridae
"Tamiini indet." = Marmotini7, cf. Miospermophilus sp.7
"Tamiini indet." = Marmotini7 squirrel
cf. Miospermophilus sp.7 Black 1963 squirrel
 Rodentia - Eomyidae
Eomyidae indet. Winge 1887 rodent
 Rodentia - Heteromyidae
Heteromyidae indet. Gray 1868 rodent
Dikkomys matthewi3 Wood 1936 rodent
 Rodentia - Zapodidae
Schaubeumys grangeri2, "Plesiosminthus clivosus" = Schaubeumys clivosus2
Schaubeumys grangeri2 Wood 1935 jumping mouse
"Plesiosminthus clivosus" = Schaubeumys clivosus2 Galbreath 1953 jumping mouse
DUPLICATE REF 1712 or 1713 or 1714
 Lagomorpha - Leporidae
Archaeolagus primigenius1 Matthew 1907 rabbit
Archaeolagus cf. macrocephalus1 Matthew 1907 rabbit
Palaeolaginae indet.1 Dice 1929 rabbit
omitted by Green and Martin
 Lagomorpha - Ochotonidae
Gripholagomys lavocati n. gen. n. sp.1
Gripholagomys lavocati n. gen. n. sp.1 Green 1972 pika
 Lipotyphla - Erinaceidae
Hibbarderix obfuscatus7 Martin and Green 1984 hedgehog
cf. Parvericius sp.7 Koerner 1940 hedgehog
 Lipotyphla - Geolabididae
? Geolabididae indet.7 McKenna 1960 placental
 Lipotyphla - Talpidae
Talpidae indet. Fischer de Waldheim 1817 mole
"Uropsilinae ?": Martin and Green 1984
 Tribosphenida - Soricidae
Wilsonosorex sp.7, "Antesorex cf. compressus" = Limnoecus compressus7
Wilsonosorex sp.7 Martin 1978 shrew
"Antesorex cf. compressus" = Limnoecus compressus7 Wilson 1960 shrew
 Theriiformes - Herpetotheriidae
Herpetotherium sp.6 Cope 1873 marsupial