Table 1. Radiocarbon dates (yr BP and lab numbers) on dung of Shasta ground sloth (Nothrotheriops shastense) from North America.
| Gypsum Cave, NV (610 m) | Rampart Cave, AZ (535 m) | Muav Caves, AZ (400 m) | Shelter Cave, NM (1475 m) | Aden Crater, NM (1200 m) | Upper Sloth Caves, TX (2000 m) | Williams Cave, TX (1,500 m) |
|---|---|---|---|---|---|---|
| 11,360 ± 260 A-1202 | 10,400 ± 275 I-442 | 11,140 ± 160 A-1212 | 11,330 ± 370 A-1878 | 11,080 ± 200 Y-1163B | 10,750 ± 140 A-1583 | 11,140 ± 320 A-1589 |
| 11,690 ± 250 LJ-452 | 10,780 ± 200 A-1067 | 11,290 ± 170 A-1213 | 12,330 ± 190 A-1879 | 10,780 ± 140 A-1534 | 11,930 ± 170 A-1588 | |
| 10,940 ± 60 CAMS-19997 | 12,430 ± 250 A-1880 | 11,060 ± 180 A-1584 | 12,100 ± 210 A-1563 | |||
| 11,000 ± 140 A-1066 | 11,590 ± 230 A-1519 | |||||
| 11,020 ± 200 A-1068 | ||||||
| 11,140 ± 250 A-1453 | ||||||
| 11,370 ± 300 A-1392 | ||||||
| 11,480 ± 200 A-1041 | ||||||
| 12,050 ± 400 L-437C | ||||||
| 12,440 ± 300 A-1070 |
Elevations are given for each site. For Rampart Cave, only the 10 youngest dates are given. Data are compiled from refs. 8, 22, 55, 58, 65, and 66, where additional details can be found. A, University of Arizona Radiocarbon Laboratory; CAMS, Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory; I, Isotopes, Inc.; L, Lamont Geological Observatory; LJ, La Jolla Radiocarbon Laboratory; Y, Yale Radiocarbon Laboratory.