Table 1. Summary of species analyzed in this study and species averaged fractal dimensionality (D) and occlusal tooth area (cm2).
| Tribe | Genus and species | n (D) | Mean (D) | SD (D) | n (area) | Mean (area) | SD (area) |
|---|---|---|---|---|---|---|---|
| Equini | Calippus placidus | 2 | 1.5180 | 0.0891 | 2 | 2.0815 | 0.0629 |
| Equini | Calippus sp. | 1 | 1.3580 | NA | 1 | 3.6030 | NA |
| Equini | Equus asinus | 1 | 1.2290 | NA | 1 | 5.1590 | NA |
| Equini | Equus caballus | 4 | 1.4373 | 0.0549 | 4 | 7.5205 | 1.6367 |
| Equini | Equus calobutus | 4 | 1.3223 | 0.0714 | 4 | 7.2530 | 1.9051 |
| Equini | Equus complicatus | 1 | 1.4050 | NA | 1 | 6.0810 | NA |
| Equini | Equus conversidens | 1 | 1.3270 | NA | 1 | 5.3290 | NA |
| Equini | Equus excelsus | 4 | 1.3810 | 0.0879 | 3 | 6.6210 | 1.1453 |
| Equini | Equus fraternus | 1 | 1.3030 | NA | 1 | 8.7110 | NA |
| Equini | Equus grevyi | 1 | 1.2760 | NA | 1 | 7.5950 | NA |
| Equini | Equus idahoensis | 6 | 1.3293 | 0.0418 | 5 | 6.5108 | 0.7770 |
| Equini | Equus occidentalis | 1 | 1.4240 | NA | 1 | 8.2630 | NA |
| Equini | Equus quagga | 4 | 1.2483 | 0.0176 | 4 | 5.6980 | 0.4205 |
| Equini | Equus scotti | 7 | 1.3453 | 0.0598 | 7 | 6.8604 | 1.7839 |
| Equini | Equus simplicidens | 13 | 1.3949 | 0.0330 | 9 | 7.8007 | 1.6641 |
| Equini | Equus sp. | 5 | 1.3266 | 0.0221 | 5 | 5.2488 | 0.5808 |
| Equini | Equus spp. | 4 | 1.3075 | 0.0076 | 4 | 6.0648 | 0.5734 |
| Equini | Pliohippus mirabilis | 1 | 1.4010 | NA | 0 | NA | NA |
| Equini | Pliohippus pernix | 1 | 1.4000 | NA | 1 | 3.8970 | NA |
| Equini | Pliohippus sp. | 1 | 1.3980 | NA | 1 | 5.2170 | NA |
| Equini | Protohippus perditus | 2 | 1.3870 | 0.0170 | 2 | 3.3080 | 0.0198 |
| Equini | Protohippus sp. | 2 | 1.3880 | 0.0523 | 2 | 3.0135 | 0.5211 |
| Hipparionini | Cormohipparion goorisi | 1 | 1.4150 | NA | 1 | 3.8000 | NA |
| Hipparionini | Cormohipparion ingenuus | 1 | 1.3170 | NA | 1 | 3.1690 | NA |
| Hipparionini | Cormohipparion occidentale | 4 | 1.3493 | 0.0326 | 4 | 4.3823 | 1.3176 |
| Hipparionini | Cormohipparion quinni | 1 | 1.4450 | NA | 1 | 4.5870 | NA |
| Hipparionini | “Cormohipparion” sphenodus | 1 | 1.4270 | NA | 1 | 5.3150 | NA |
| Hipparionini | Neohipparion affine | 5 | 1.4334 | 0.0821 | 5 | 3.6038 | 0.9205 |
| Hipparionini | Neohipparion eurystyle | 2 | 1.3520 | 0.0764 | 2 | 4.0775 | 0.0700 |
| Hipparionini | Neohipparion leptode | 1 | 1.4200 | NA | 1 | 4.2290 | NA |
| Hipparionini | “Neohipparion” republicanus | 3 | 1.4593 | 0.0577 | 3 | 3.4333 | 0.4258 |
| Hipparionini | Neohipparion sp. | 5 | 1.4622 | 0.0905 | 5 | 3.9066 | 0.7120 |
| Hipparionini | Pseudhipparion gratum | 2 | 1.3715 | 0.0445 | 0 | NA | NA |
| Hipparionini | Pseudhipparion sp. | 4 | 1.4600 | 0.1061 | 4 | 3.3113 | 0.3720 |
| Hipparionini | gen. et sp. indet. | 1 | 1.4850 | NA | 1 | 3.0090 | NA |
Notes.
- NA
- no value
- n
- number of specimens
- SD
- standard deviation