Table 2.
AMS 14C ages, stable isotope values, and analytical data
| Specimen | Chemical fraction | δ15N ‰ (AIR) | δ13C ‰ (VPDB) | %N | %C | C/N (atomic %) | 14C yBP (± 1 σ) | AMS Lab no. | Cal y B.P. (± 1 σ)* |
| Camelops hesternus | |||||||||
| Camel, Cat. no. 3610.1 (rib, partial) | |||||||||
| KOH collagen | 2.0 | −19.2 | 14.8 | 41.5 | 3.03 | 11,425 ± 35 | UCIAMS-116390 | ||
| Gelatin (KOH-Collagen) | 1.9 | −19.1 | 14.1 | 39.1 | 3.00 | 11,420 ± 30 | UCIAMS-116383 | ||
| XAD-gelatin | 11,465 ± 40 | UCIAMS-116400 | 13,270–13,365 | ||||||
| XAD-gelatin | 11,425 ± 30 | UCIAMS-127347 | 13,230–13,305 | ||||||
| Equus conversidens | |||||||||
| Horse 1, Cat. no. 3594 (left rib) | |||||||||
| KOH collagen | |||||||||
| Gelatin (KOH-collagen) | 0.4 | −20.7 | 14.9 | 41.5 | 3.01 | 11,475 ± 30 | UCIAMS-127359 | ||
| XAD-gelatin | 11,470 ± 35 | UCIAMS-127348 | 13,275–13,360 | ||||||
| Horese 2, Cat. no. 2988.1 (left tibia) | |||||||||
| KOH collagen | 11,310 ± 30 | UCIAMS-127360 | |||||||
| Gelatin (KOH-collagen) | 2.0 | −20.4 | 14.9 | 41.5 | 3.02 | 11,385 ± 30 | UCIAMS-127361 | ||
| XAD-gelatin | 11,410 ± 30 | UCIAMS-127349 | 13,215–13,290 | ||||||
| Horse 3, Cat. no. 944 (left radius) | |||||||||
| KOH collageb | |||||||||
| Gelatin (KOH-collagebn) | 1.5 | −20.6 | 14.9 | 41.5 | 3.01 | 11,415 ± 30 | UCIAMS-127362 | ||
| XAD-gelatin | 11,460 ± 30 | UCIAMS-127350 | 13,265–13,340 | ||||||
| Horse A, Cat. No. 315 (right rib) | |||||||||
| KOH collagen | 13,540 ± 40† | UCIAMS-127363 | |||||||
| Gelatin (KOH-collagen) | 0.6 | −20.7 | 14.9 | 41.5 | 3.06 | 11,495 ± 30 | UCIAMS-127364 | ||
| XAD-gelatin | 11,440 ± 30 | UCIAMS-127351 | 13,250–13,320 | ||||||
| Horse B, Cat. no. 164 (right rib) | |||||||||
| KOH collagen | |||||||||
| Gelatin (KOH-collagen) | 0.6 | −20.6 | 14.9 | 41.5 | 3.02 | 11,435 ± 30 | UCIAMS-127365 | ||
| XAD-gelatin | 11,475 ± 30 | UCIAMS-127352 | 13,280–13,360 | ||||||
| Horse B, Cat. no. 159 (left ulna) | |||||||||
| KOH collagen | |||||||||
| Gelatin (KOH-collagen) | 1.0 | −20.4 | 14.9 | 41.5 | 3.00 | 11,490 ± 30 | UCIAMS-127370 | ||
| XAD-gelain | 11,465 ± 30 | UCIAMS-127355 | 13,270–13,350 | ||||||
| Horse C, Cat. no. 683 (left femur) | |||||||||
| KOH collagen | 11,415 ± 30 | UCIAMS-127366 | |||||||
| Gelatin (KOH-collagen) | 1.6 | −20.4 | 14.9 | 41.5 | 3.01 | 11,435 ± 30 | UCIAMS-127367 | ||
| XAD-gelatin | 11,440 ± 30 | UCIAMS-127353 | 13,250–13,320 | ||||||
| Horse D, Cat. no. 77.1 (left humerus) | |||||||||
| KOH collagen | 11,190 ± 30 | UCIAMS-127368 | |||||||
| Gelatin (KOH-collagen) | 0.1 | −20.4 | 14.9 | 41.5 | 3.02 | 11,355 ± 30 | UCIAMS-127369 | ||
| XAD-gelatin | 11,430 ± 30 | UCIAMS-127354 | 13,235–13,310 | ||||||
| Bootherium bombifrons | |||||||||
| Muskox, Cat. no. 3293.1 (left rib) | |||||||||
| KOH collagen | 11,170 ± 30 | UCIAMS-127371 | |||||||
| Gelatin (KOH-collagen) | 1.0 | −19.3 | 14.9 | 41.5 | 3.01 | 11,255 ± 30 | UCIAMS-127372 | ||
| XAD-gelatin | 11,320 ± 30 | UCIAMS-127373 | 13,120–13,200 | ||||||
*
Calibration radiocarbon ages used Calib 7.0 (28).
†
This specimen was coated with Butvar 98 (two coats) dissolved in ethanol. KOH fraction contaminated by Butvar.