Table 2.
Cranial measurements (means in millimeters) of fossils and selected living species
| Interorbital breadth | Biorbital breadth | Orbital height | Orbital width | Postorbital constriction | Bicanine breadth | Bimolar width | Body weight, g | Cranial capacity, cm3 | Index of cranial capacity | |
|---|---|---|---|---|---|---|---|---|---|---|
| MPM-PV 5000 | 4.4 | 30.5 | 13.9 | 13.1 | 27.3 | 14.4 | 23.9 | — | — | — |
| Saimiri sciureus (3m, 3f) | 3.2 | 33 | 15.3 | 13.9 | 29.8 | 17.3 | 20.4 | 914 | 23.6 | 7 |
| Saimiri oerstedi (3m, 3f) | 3 | 32.5 | 14.7 | 13.9 | 29.7 | 15.9 | 19.6 | — | — | — |
| Cebus apella (4m, 4f) | 5.2 | 51.2 | 21.3 | 20.2 | 38.6 | 28 | 28.2 | 2537 | 76.2 | 11.7 |
| Callicebus moloch (4m, 4f) | 6.7 | 36 | 15.4 | 14.1 | 31.4 | 14.3 | 21.3 | 1078 | 18.3 | 4.9 |
| Aotus vociferans (3m, 3f) | 4.9 | 42 | 19.3 | 19.1 | 31 | 15.4 | 20.4 | 985 | 16.9 | 4.8 |
| Leontopithecus rosalia (2m, 1f, 3?) | 6.4 | 28.6 | 11.7 | 11.3 | 23.2 | 15.9 | 20.7 | — | — | — |
Sexes and sample sizes are in parentheses. Data on body weight and cranial capacity and the Index of Cranial Capacity are from Martin (17) and are not based on the same individuals. m, males; f, females.