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- Lab number
- RIDDL-725
- Material dated
- mammoth? bone collagen; collagène osseux de mammouth
- Taxa dated
- Mammuthus sp.? (MkVl-26: 1, id. by C.R. Harington)
- Locality
- right bank of Old Crow River, on the inside of the first bend below the mouth of King Edward Creek, 265 m asl, 54.8 km above the river mouth, Porcupine drainage, northern Yukon Territory
- Map sheet
- 116 O/13
- Submitter
- R.E. Morlan
- Date submitted
- April 28, 0097
- Normalized Age
- 37200 ± 700
- δ13C (per mil)
- -20.0
- Significance
- palaeobiology, artifact?; paléobiologie, artefact?
- Context
- surface of point bar
- Associated taxa
- Mammalia: Mammuthus sp?
- Additional information
- AMS date. Collagen extraction method 3, <30kD.
- Comments
- MkVl-26, Old Crow River Locality CRH-74: MkVl-26:1, a proboscidean long bone interpreted as a percussion-flaked core (Morlan, 1980: Pl. 4.16), has been dated on seven different aliquots of collagen. CRNL-1219 yielded a date of 41,460 +5670/-3290 BP. A second aliquot, obtained by excessive hydrolysis of the sample protein, yielded a date of 3420 +/- 1020 BP. This is considered to represent a small stable organic residue of young age that does not reflect the actual age of the bone. It was not given a separate lab number and does not have a separate record in this data base. Five aliquots were dated by the RIDDL lab, using slightly different methods of collagen extraction. This is one of three proboscidean bones that yielded problematic results from accelerator mass spectrometry dating.