Table 1. Body-mass-adjusted canine bite-force results and mean brick VM stresses for selected regions in a jaw-adductor-driven bite at maximum gape.
Body mass estimate (kg) | Jaw muscle recruitmentforce (N) | Canine bite force (N)- 2/3rd power rule | Mean VM stress (MPa) | |||
Tooth root | Canine-crowns | Rest of the Cranium | ||||
S. fatalis | 259 | 3785* | 519 | 0.552 | 2.593 | 1.074 |
T. atrox | 82 | 24010* | 241 | 0.486 | 2.311 | 1.577 |
P. pardus | 68 | 1658* | 212 | 0.397 | 1.848 | 0.584 |
Muscle forces were back-calculated from FE models that gave the body-mass-scaled bite-force output at canines assuming a 2/3 power relationship. The choice of reference taxon is immaterial in this context and S. fatalis was arbitrarily chosen here. kg = kilograms; N = Newtons.