Old Crow River (Lower OCR 12) (Pleistocene of Canada)

Also known as Unit 1b

Where: Yukon, Canada (68.2° N, 140.0° W: paleocoordinates 68.3° N, 139.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Irvingtonian (1.8 - 0.3 Ma)

• said to be Illinoian

Environment/lithology: terrestrial

Primary reference: A. V. Jopling and Et al. 1981. Stratigraphic, Sedimentological and Faunal Evidence for the Occurrence of Pre-Sangamonian Artefacts in Northern Yukon. Arctic 34(1) [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 20434: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• underlies Unit 2
Mammalia
 Rodentia - Cricetidae
Ondatra zibethicus Linnaeus 1766 muskrat
Dicrostonyx sp. Gloger 1841 lemming
"Dicrostonyx (Misothermus) sp."
Lemmus sibiricus Ognev 1947 Siberian brown lemming
Microtus xanthognathus Leach 1815 taiga vole
Microtus oeconomus Pallas 1776 tundra vole
questioned by Morlan 1984
Microtus miurus Osgood 1901 vole
 Rodentia - Sciuridae
Spermophilus parryii Richardson 1825 arctic ground squirrel
 Rodentia - Castoridae
Castor canadensis Kuhl 1820 American beaver
Castoroides ohioensis Foster 1838 giant beaver
 Lagomorpha - Leporidae
Lepus americanus Erxleben 1777 snowshoe hare
Lepus arcticus Ross 1819 hare
 Lagomorpha - Ochotonidae
Ochotona cf. whartoni Guthrie and Matthews 1971 pika
Ochotona princeps Richardson 1828 American pika
 Perissodactyla - Equidae
Equus sp. Linnaeus 1758 horse
 Carnivora - Canidae
Canis cf. lupus Linnaeus 1758 gray wolf
Alopex cf. lagopus Linnaeus 1758 Arctic fox
 Proboscidea - Elephantidae
Mammuthus sp. Brookes 1828 mammoth
 Artiodactyla - Cervidae
Cervus ? elaphus Linnaeus 1758 red deer
Rangifer tarandus Linnaeus 1758 reindeer