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Lab number
GSC-952
Field number
HH-CR67-18A
Material dated
freshwater mollusc shell; coquille de mollusque d'eau douce
Taxa dated
Pisidium idahoense (46.2 g, id. by A.H. Clarke, Jr.)
Locality
south bank of Porcupine River, 297 m asl, about 19 km downstream from Old Crow, Yukon Territory
Map sheet
116 O/05
Submitter
O.L. Hughes
Date submitted
July 29, 0098
Measured Age
32400 ± 770
Normalized Age
32675 ± 770
δ13C (per mil)
-8.0
Significance
palaeobiology; paléobiologie
Context
1.5 - 2.4 m below glaciolacustrine clay, associated with brown lemming and Arctic grayling bones and scales
Associated taxa
Mammalia: Lemmus sibiricus; Pisces, Thymallus arcticus
Comments
MiVl-1, Ch'ijee's Bluff: This locality is known locally as 12-mile bluff. It is Harington's Porcupine River Locality CRH-100 and Hughes' HH62-228. Two vertebrate specimens found on the river bank at the base of this section have been dated. One of them is a caribou antler wedge (Bonnichsen, 1979: Pl. VIII-19, #109-1) that is dated by RIDDL-141. A bulk sample of silt yielded freshwater shells dated by GSC-952, associated with brown lemming and Arctic grayling fossils and with plant macrofossils indicative of a tundra environment.

References