Cottonwood Creek (UNSM Dw-117) (Miocene of the United States)

Where: Dawes County, Nebraska (42.4° N, 103.0° W: paleocoordinates 43.2° N, 99.1° W)

• coordinate stated in text

When: Runningwater Formation, Early/Lower Hemingfordian (20.4 - 16.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; unlithified, green sandstone

• "fine-to-medium-grained, poorly sorted, unconsolidated sand... which ranges in color from tan to grayish green"

Size class: mesofossils

Reposited in the UNSM

Collection methods: bulk, sieve,

• "recovered from road cuts... fossils were collected by screen-washing methods"

Primary reference: G. E. Ostrander. 1986. Insectivora (Mammalia) from the Miocene (Hemingfordian) of western Nebraska. Transactions of the Nebraska Academy of Sciences 14:21-24 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26019: authorized by John Alroy, entered by John Alroy on 30.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Theriamorpha - Talpidae
Scalopoides cf. isodens
Scalopoides cf. isodens Wilson 1960 mole
omitted by Bailey 2004
 Theriamorpha - Proscalopidae
Mesoscalops scopelotemos
Mesoscalops scopelotemos Reed 1960 placental
 Theriamorpha - Erinaceidae
Erinaceidae indet., Parvericius montanus
Erinaceidae indet. Fischer von Waldheim 1817 hedgehog
Parvericius montanus Koerner 1940 hedgehog
 Lagomorpha - Ochotonidae
Oreolagus nebrascensis1
Oreolagus nebrascensis1 McGrew 1941 pika
 Rodentia - Mylagaulidae
Mesogaulus paniensis1
Mesogaulus paniensis1 Matthew 1902 rodent
 Rodentia - Cricetidae
Yatkolamys edwardsi1
Yatkolamys edwardsi1 Martin and Corner 1980 mouse
 Rodentia - Heteromyidae
Stratimus strobeli2, Harrymys magnus1
Stratimus strobeli2 Korth et al. 1990 rodent
Harrymys magnus1 Wood 1932 rodent
1Bailey 2004; 2Korth et al. 1990