TABLE 1. Radiometric ages for sub-fossil elements using AMS-radiocarbon method
| UGA# | Sample ID | Bone type | Bioapatite | Collagen-like organics | ||
δ13C  |
14C age, years BP | δ13C |
14C age, years BP | |||
| 4024 | GMNH-27370 | vertebra | -7.66 | 37,580±120 | -20.96 | 10,630±40 |
| 4281 | GMNH-27372 | mandible | -6.62 | 36,570±300 | -20.25 | 10,350±80 |
| 4215 | GMNH-27373 | vertebra | -6.67 | 34,520±160 | -21.21 | 8,080±40 |
TABLE 2. Eschrichtius robustus, holotype. Dentary measurements (in mm).
| Specimen Number GMNH-27372 |
| Length (straight) 137 cm |
| Length (chord) 142 cm |
| Height at mandibular foramen 170mm |
| Height at condyle (inferred) 190 mm (160 actual) |
| Height at coronoid process (inferred) 130 actual (broken) |
| Minimum height between condyle and coronoid process 170 mm |
| Circumference 100 mm behind proximal end 360 mm |
| Circumference 200 mm behind proximal end 470 mm |
| Circumference 300 mm behind proximal end 410 mm |
| Circumference 400 mm behind proximal end 460 mm |
| Circumference 500 mm behind proximal end 490 mm |
| Circumference 600 mm behind proximal end 492 mm |
| Circumference 700 mm behind proximal end 492 mm |
| Circumference 800 mm behind proximal end 492 mm |
| Circumference 900 mm behind proximal end 490 mm |
| Circumference 1000 mm behind proximal end 490 mm |
| Distance between condyle and coronoid process 300 mm (inferred) |
| Distance between coronoid process and anterior end 360 (inferred) |
