Table 1.
Specimen and taxa choice and categorization
| Taxon | Size class (estimated mass [g]) | Ecology | Number of specimens | Thoracic vertebrae (number [mean]) | Lumbar vertebrae (number) | Scan resolutions (µm) |
|---|---|---|---|---|---|---|
| Bradypus tridactylus | Medium (4136.36) | Arboreal | 1 | 15 (15) | 3 | 46.833 |
| Bradypus variegatus | Medium (4375.80) | Arboreal | 3 | 16–17 (16) | 3 | 41.997–45.906 |
| Chlamyphorus truncatus | Small (85.53) | Scratch digging | 4 | 11–12 (12) | 3 | 22.101–24.243 |
| Choloepus didactylus | Medium (6646.50) | Arboreal | 2 | 23 (23) | 3–4 | 49.589–56.169 |
| Cyclopes didactylus | Small (263.95) | Arboreal | 3 | 15–16 (15) | 2 | 25.031–26.123 |
| Dasypus novemcinctus | Medium (3949.01) | Scratch digging | 3 | 10 (10) | 5 | 41.61–42.931 |
| Myrmecophaga tridactyla | Large (29531.83) | Hook-and-pull digging | 2 | 15–16 (16) | 2 | 93.178–96.551 |
| Priodontes maximus | Large (40641.089) | Scratch digging | 2 | 12–13 (13) | 2 | 73.771–76.226 |
| Tamandua mexicana | Medium (4178.51) | Hook-and-pull digging | 3 | 16–17 (17) | 2–3 | 44.643–46.692 |
| Tolypeutes matacus | Small (1303.47) | Scratch digging | 1 | 12 (12) | 3 | 27.465 |