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Canada / MB / EhMd-? (Grandview) / I-1623
- 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.