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, W. N. Irving, and B. F. Beebe. 1981. Stratigraphic, Sedimentological and Faunal Evidence for the Occurrence of Pre-Sangamonian Artefacts in Northern Yukon. Arctic 34(1):3-33 [J. Alroy/J. Alroy/M. Uhen]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
Show authors, comments, and common names
Mammalia
 Proboscidea - Elephantidae
Mammuthus sp.
Mammuthus sp. Brookes 1828 mammoth
 Carnivora - Canidae
Canis cf. lupus, "Alopex cf. lagopus" = Vulpes lagopus
Canis cf. lupus Linnaeus 1758 gray wolf
"Alopex cf. lagopus" = Vulpes lagopus Linnaeus 1758 Arctic fox
 Perissodactyla - Equidae
Equus sp.
Equus sp. Linnaeus 1758 horse
 Artiodactyla - Cervidae
Cervus ? elaphus, Rangifer tarandus
Cervus ? elaphus Linnaeus 1758 red deer
Rangifer tarandus Linnaeus 1758 reindeer
 Lagomorpha - Ochotonidae
Ochotona princeps, Ochotona cf. whartoni
Ochotona princeps Richardson 1828 American pika
Ochotona cf. whartoni Guthrie and Matthews 1971 pika
 Lagomorpha - Leporidae
Lepus arcticus, Lepus americanus
Lepus arcticus Ross 1819 hare
Lepus americanus Erxleben 1777 snowshoe hare
 Rodentia - Cricetidae
Lemmus sibiricus, Dicrostonyx sp., Ondatra zibethicus, Microtus xanthognathus, Microtus oeconomus, Microtus miurus
Lemmus sibiricus Ognev 1947 Siberian brown lemming
Dicrostonyx sp. Gloger 1841 lemming
"Dicrostonyx (Misothermus) sp."
Ondatra zibethicus Linnaeus 1766 muskrat
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" = Urocitellus parryii
"Spermophilus parryii" = Urocitellus parryii Richardson 1825 arctic ground squirrel
 Rodentia - Castoridae
Castoroides ohioensis, Castor canadensis
Castoroides ohioensis Foster 1838 giant beaver
Castor canadensis Kuhl 1820 American beaver