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Lab number
I-1623
Material dated
muskox bone collagen; collagène osseux de boeuf musqué
Taxa dated
Ovibos moschatus (id. by C.R. Harington)
Locality
south side of the Valley River, 4.8 km east of Grandview, Lake Winnipegosis drainage, Manitoba
Map sheet
62 N/02
Submitter
C.R. Harington
Date submitted
April 17, 0098
Measured Age
8620 ± 190
Normalized Age
8700 ± 190
δ13C (per mil)
-20.0
Significance
palaeobiology; paléobiologie
Context
sand and gravel beneath about 3 m of alluvium, about 1.5 m above the present channel bottom
Associated taxa
Mammalia: Ovibos moschatus
Comments
EhMd-VP, Grandview: A muskox skull fragment was recovered by a heavy equipment operater working at a gravel deposit. Stratigraphic information was obtained by R.W. Klassen, and the skull was identified and dated by C.R. Harington. Harington postulates that the muskox represents herds that survived in a refugium south of Wisconsinan ice, then moved north with the tundra zone bordering the backmelting continental ice until they reached their present range in the Northwest Territories mainland. Harington notes that the great distance of the ice front north of Grandview 8600 years ago, and palaeobotanical evidence for grassland in the Duck Mountain area at that time (Ritchie, 1969), suggest that I-1623 may be erroneously recent. It should perhaps be considered a minimum age.

References