Olson Ranch ( of the United States)

Also known as UNSM Cr-125

Where: Cherry County, Nebraska (42.8° N, 100.8° W: paleocoordinates 43.6° N, 95.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Harrison Formation (Arikaree Group), Harrisonian (24.8 - 20.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Reposited in the UNSM

Primary reference: W. W. Korth. 1992. Fossil small mammals from the Harrison Formation (late Arikareean: earliest Miocene), Cherry County, Nebraska. Annals of Carnegie Museum 61(2):69-132 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 17816: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia - Cricetidae
Leidymys cerasus n. sp. Korth 1992 mouse
Paciculus nebraskensis Alker 1969 mouse
 Rodentia - Sciuridae
Protosciurus sp. Black 1963 squirrel
Nototamias quadratus Korth 1992 squirrel
 Rodentia -
Geomyoidea indet. Bonaparte 1845 rodent
 Rodentia - Eomyidae
Pseudotheridomys sp. Schlosser 1926 rodent
Arikareeomys skinneri Korth 1992 rodent
 Rodentia - Geomyidae
Entoptychus grandiplanus Korth 1992 pocket gopher
 Rodentia - Florentiamyidae
Sanctimus cf. stuartae Macdonald 1970 rodent
Hitonkala macdonaldtau Korth 1992 rodent
 Rodentia - Castoridae
Fossorcastor cf. fossor Peterson 1905 beaver
 Rodentia - Allomyidae
Parallomys americanus Korth 1992 rodent
Alwoodia harkseni Macdonald 1963 rodent
 Rodentia - Mylagaulidae
Trilaccogaulus ovatus Rensberger 1979 rodent
Promylagaulus riggsi McGrew 1941 rodent
 Lagomorpha - Leporidae
Archaeolagus cf. primigenius Matthew 1907 rabbit
 Lagomorpha - Ochotonidae
Gripholagomys lavocati Green 1972 pika
 Lipotyphla - Erinaceidae
Amphechinus sp. Aymard 1850 hedgehog
Parvericius voorhiesi Korth 1992 hedgehog
Ocajila sp. Macdonald 1963 hedgehog
 Lipotyphla - Talpidae
Mystipterus sp. Hall 1930 mole
 Tribosphenida - Heterosoricidae
Domnina sp. Cope 1873 placental
 Tribosphenida - Proscalopidae
Proscalops secundus Matthew 1909 placental
 Theriiformes - Herpetotheriidae
Herpetotherium youngi McGrew 1937 marsupial