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C:N atomic ratios and radiocarbon ages from Kostenki 14 (Markina Gora) skeleton (a tibia)
| Fraction/treatment | Laboratory code | C:N | 14C age, BP, ±1 σ error | Source |
| Gelatin | OxA-7126 | 3.7 | 4,750 ± 40 | (18) |
| Gelatin | GrA-9303 | NP | 3,730 ± 40 | (18) |
| Gelatin | SR-7366/UCIAMS-61666 | NP | 13,610 ± 40 | (19) |
| Ultrafiltered collagen | NA | 4.1 | Not dated | (17) |
| HPLC-separated Hyp fraction | OxA-X-2395-15 | 5.1 | 33,250 ± 500 | This paper |
Note the theoretical C:N ratio of Hyp is 5.0. NA, not available; NP, not published.
