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Canada / SK / FaNp-? (Riddell) / I-8581
- Lab number
- I-8581
- Material dated
- horse bone collagen; collagène osseux de cheval
- Taxa dated
- Equus scotti metatarsal (CMN-21326, id. by T. Skwara)
- Locality
- 4.8 km north of Sutherland, South Saskatchewan River, Saskatchewan
- Map sheet
- 73 B/02
- Submitter
- C.R. Harington
- Date submitted
- June 29, 0098
- Measured Age
- 2760 ± 90
- Normalized Age
- 2840 ± 90
- δ13C (per mil)
- -20.0
- Significance
- palaeobiology, anomalous, young; paléobiologie, anormal, jeune
- Context
- Riddell member, Floral Formation
- Associated taxa
- Mammalia: Equus sp
- Additional information
- It is assumed that this date was not corrected previously for isotopic fractionation.
- Comments
- FaNp-VP, Riddell: Skwara (1988; SkwaraWoolf, 1981) describes the Riddell fauna as a Rancholabrean assemblage that may be as much as 175,000 years old. She rejects S-1305, because it underlies till of the Battleford Formation and leaves too little time for advance and retreat of Late Wisconsinan ice. She notes that GSC-1041, 38,000 +/- 560 BP on wood from the top of the Floral Formation near Kenaston, provides a minimum age for the Riddell fauna. I-8581 is also considered to be anomalously young. The bison bones dated by S-1306 are from a younger context stratigraphically above the Floral Formation.