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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.