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Lab number
Field number
Material dated
bone collagen; collagène osseux
in the Livingstone Range, 1829 m asl, Oldman drainage, southwestern Alberta
Map sheet
82 G/15
R.K. Brulotte
Date submitted
March 15, 0098
Measured Age
8775 ± 365
Normalized Age
8855 ± 365
δ13C (per mil)
palaeobiology; paléobiologie
subunits 16G, 16H, 17G, and 17H, levels 16 and 17, the lowest levels excavated, consisting of the first sediments in the shelter
DkPp-11, Racehorse Rockshelter: This stratified deposit is rich in small mammal remains suitable for palaeoenvironmental analysis. Small mammals are present from the deepest levels, dated by S-2417. Level 6, dated by S-2418, marks the first appearance of large mammals and cultural materials in the rockshelter, along with an increase in small mammal diversity. The Level 6 assemblage indicates an ameliorated climate and the establishment of a mixed-forest/grassland ecotone.