Table 3.
Castoroides specimen information and stable isotope results. Values in bold indicate mean and 1 SD where duplicate analyses were completed for the same specimen.
| Project sample ID | Institute accession ID | Specimen locality | Skeletal element | δ13Ccol (‰, VPDB) | δ15Ncol (‰, AIR) | C (wt. %) | N (wt. %) | Collagen yield (wt. %) | Atomic C:N |
|---|---|---|---|---|---|---|---|---|---|
| C1-TP2014 | CMN 16657 | Old Crow Basin, YT | Humerus | −21.2 | +6.3 | 41.7 | 15.6 | 1.4 | 3.1 |
| C3-TP2014 | CMN 18306 | Old Crow Basin, YT | Pelvis | −19.1 ± 0.3 | +1.9 ± 0.1 | 41.5 | 15.2 | 1.4 | 3.2 |
| C4-TP2014 | CMN 18707 | Old Crow Basin, YT | Tibia | −10.7 ± 0.2 | +5.7 ± 0.1 | 41.8 | 15.5 | 3.6 | 3.1 |
| C5-TP2014 | CMN no ID | Old Crow Basin, YT | Femur | −18.5 | +7.7 | 41.2 | 15.7 | Data not provided* | 3.1 |
| C6-TP2014 | CMN 14711 | Old Crow Basin, YT | Humerus | −16.0 | +6.0 | 33.1 | 11.9 | 1.1 | 3.2 |
| C7-TP2014 | CMN 14781 | Old Crow Basin, YT | Long bone diaphysis | −14.0 | +7.4 | 39.6 | 14.5 | Data not provided* | 3.2 |
| C8-TP2014 | CMN 33640 | Old Crow Basin, YT | Humerus | −12.4 ± 0.2 | +6.2 ± 0.0 | 39.7 | 14.4 | 2.4 | 3.2 |
| C9-TP2014 | CMN 43178 | Old Crow Basin, YT | Femur | −21.2 | +6.8 | 42.7 | 15.5 | Data not provided* | 3.2 |
| C10-TP2014 | OHS N9109 | Clear Creek Township, OH | Mandible | −20.2 ± 0.1 | +5.6 ± 0.1 | 35.5 | 12.6 | 3.1 | 3.3 |
| C11-TP2014 | OHS N9087 | Williams County, OH | Mandible | −20.6 ± 0.1 | +4.5 ± 0.1 | 40.0 | 14.3 | 11.2 | 3.3 |
| C22-TP2014 | OHS N8739 | Harmony Township, OH | Incisor (dentin) | −19.5 | +5.4 | 37.4 | 13.5 | 3.8 | 3.2 |
*Collagen extraction performed at the Keck Carbon Cycle AMS Facility at the University of California, Irvine for radiocarbon dating. Remaining collagen material was returned for stable isotope analysis at the University of Western Ontario.