Table 1. List of extinct mammal radiocarbon dates at the AS2 site.
| Specimen | 14C age BP | ± | δ 13C value | F(δ 13C) | ±F(δ 13C) | N% | Chemical fraction dated | Lab. Code | Bone Element | Fracture State | Storage Inventory Number | Excavation Unit | Stratigraphic Unit | Depth Below Surface | North coordinate | West coordinate | Current Resolution |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Equus neogeus | 12,170 | 45 | -20.9 | 0.2198 | 0.0011 | 4.9 | collagen | UCIAMS-142842 | radius | fresh | FCS.AS2.14260 | 52 | Base-Y | 1.15 m | 1.40 m | 0.62 m | accepted |
| Equus neogeus | 11,250 | 105 | -22.1 | collagen | AA-7965 | carpel bone | dry | AS2.53.1 | 53 | S | 0.75 m | 1.90 m | 1.63 m | accepted | |||
| Equus neogeus | 11,000 | 100 | -20.1 | collagen | OxA-4590 | tarsal bone | dry | AS2.54.IX.12 | 54 | S | 0.77 m | 0.84 m | 0.51 m | accepted | |||
| Equus neogeus | 8890 | 90 | -25.0** | collagen | TO-1504 | phalanx | dry | AS2.45.17 | 45 | Base-Y/S | 0.72 m | 1.70 m | 1.00 m | dismissed | |||
| Eutatus seguini | 7388 | 74 | -19.7 | 0.3986 | 0.0037 | collagen | AA-90117 | lumbar vertebra | dry | FCS.AS2.15265 | 69 | S/Z | 1.00 m | 0.66 m | 1.85 m | accepted | |
| Glossotherium robustum | 12,240 | 110 | -20.6 | collagen | OxA-4591 | femur | dry | FCS.AS2.10239 | 66 | Base-Y | 0.85–0.95 m | 1.50 m | 1.55 m | uncertainty | |||
| Glossotherium robustum | 10,500 | 90 | -20.39 | 0.2705 | 0.0030 | collagen | AA-9049 | femur | dry | FCS.AS2.10239 | 66 | Base-Y | 0.85–0.95 m | 1.50 m | 1.55 m | uncertainty | |
| Megatherium americanum | 12,200 | 170 | not informed | 0.219 | 0.0044 | XAD | CAMS-58182 | tibia | fresh | FCS.AS2.8487 | 36-37-40-41 | Base-Y | 1.10 m | 1.98 m | 1.95 m | accepted | |
| Megatherium americanum | 12,170 | 55 | -19.5 | 5.2 | collagen | OxA-15871 | tibia | fresh | FCS.AS2.8487 | 36-37-40-41 | Base-Y | 1.10 m | 1.98 m | 1.95 m | accepted | ||
| Megatherium americanum | 12,155 | 70 | -19.7 | 5.2 | collagen | OxA-10387 | tibia | fresh | FCS.AS2.8487 | 36-37-40-41 | Base-Y | 1.10 m | 1.98 m | 1.95 m | accepted | ||
| Megatherium americanum | 11,770 | 120 | -23.53 | 0.2309 | 0.0033 | collagen | AA-62514 | tibia | fresh | FCS.AS2.8487 | 36-37-40-41 | Base-Y | 1.10 m | 1.98 m | 1.95 m | accepted | |
| Megatherium americanum | 7320 | 50 | -25.0** | collagen | TO-1506 | tibia | fresh | FCS.AS2.8487 | 36-37-40-41 | Base-Y | 1.10 m | 1.98 m | 1.95 m | dismissed | |||
| Megatherium americanum | 8470 | 240 | uncorrected | collagen | LP-53 | femur | dry | AS2.35/36.1 | 36–40 | Base-Y | 0.81 m | 1.73–1.90 m | 1.80–2.25 m | dismissed | |||
| Megatherium americanum | 1800 | 110 | uncorrected | collagen | SI-5481* | femur | dry | AS2.35/36.1 | 36–40 | Base-Y | 0.81 m | 1.73–1.90 m | 1.80–2.25 m | dismissed | |||
| Camelidae cf. Hemiauchenia | 9775 | 45 | not informed | 12.6 | collagen | GrA-47340 | tooth (M2 right) | complete | FCS.AS2.10351 | 40 | Base-Y | 1.02 m | 0.40 m | 1.90 m | accepted | ||
| Toxodon platensis | 11,750 | 70 | not informed | 0.0017 | KOH | CAMS-16389 | carpel bone | complete | AS2.54.VIII.20 | 53 | Base-Y | 0.74 m | 0.27 m | 1.30 m | accepted | ||
| Toxodon platensis | 11,590 | 90 | -16.5 | collagen | AA-7964 | carpel bone | complete | AS2.54.VIII.20 | 53 | Base-Y | 0.74 m | 0.27 m | 1.30m | accepted | |||
| Hippidion sp. | 11,320 | 110 | -20.8 | collagen | AA-39365 | 3rd metatarsal | dry | FCS.AS2.9177 | 55 | Base-Y | 0.78 m | 0.22 m | 1.73 m | accepted | |||
| Equidae | 11,190 | 110 | -20.6 | 0.2483 | 0.0034 | collagen | AA-90118 | astragalus | complete | FCS.AS2.15000 | 70 | Y/S | 1.05 m | 0.42 m | 0.00 m | accepted | |
| Megamammal sp. indet. | 12,070 | 140 | -15.3 | 5.7 | collagen | OxA-9243 | indeterminate | fresh | FCS.AS2.1987 | 55 | Base-Y | 0.79 m | 1.30 m | 1.52 m | accepted | ||
| Megamammal sp. indet. | 11,730 | 70 | -15.3 | 5.7 | collagen | OxA-9242 | indeterminate | fresh | FCS.AS2.10369 | 45 | Base-Y/S | 0.79 m | 1.70 m | 1.10 m | accepted |
*Laboratories that are no longer operating or have changed their code designations.
**Standard correction (fixed).
Note: Bone specimens dated more than once are combined in the same row. The chemical fraction is stated as reported by the laboratory. Current resolution analysis of the radiocarbon chronology for the extinct Pleistocene assemblage is based on Steele and Politis [25].