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Lab number
Beta-16159
Material dated
bear bone collagen; collagène osseux d' ours
Taxa dated
Ursus arctos mandible (CMN-35965, id. by C.R. Harington)
Locality
Hunker Creek, Klondike District, Yukon drainage, Yukon Territory
Map sheet
115 O/15
Submitter
C.R. Harington
Date submitted
July 29, 0098
Measured Age
41000 ± 1050
Normalized Age
41085 ± 1050
δ13C (per mil)
-19.82
Significance
palaeobiology; paléobiologie
Context
placer deposits at J. Erickson's claim
Associated taxa
Mammalia: Ursus arctos
Additional information
del N-15 = 4.39
Comments
KlVi-1, Dawson Locality 16: The bison tibia dated by I-11051 displays complex spiral fractures induced when the bone was in a fresh condition, possibly by a person seeking to extract the marrow. The date suggests that the bone represents a wood bison (Bison bison athabascae). The caribou antler dated by Beta-27512 is interpreted as a punch that could have been employed for indirect percussion flaking of stone tools such as blades or microblades. It is noteworthy that the date is co-eval with the time range of the Nenana complex known in neighbouring Alaska. The caribou antler dated by I-8580 exhibits no modifications attributable to human activity, but the date documents the presence of caribou in the Beringian refugium at the height of the late Wisconsinan; most of this antler is preserved in the collections of the Canadian Museum of Nature. Beta-16159 indicates that brown bears lived in eastern Beringia during mid-Wisconsinan time.

References