Significant differences in the relative participation (Frac. part. jaw) of the different muscles groups in generating moments around the jaw joint in Sphenodon punctatus (SP) and Plocederma stellio (PS)
| Muscle . | Frac. part. jaw SP (G) . | Frac. part. jaw SP (P) . | Frac. part. jaw PS . |
|---|---|---|---|
| MAME | 0.546 | 0.580 | 0.699 |
| MPsT | 0.253 | 0.253 | 0.081 |
| MPt | 0.191 | 0.157 | 0.098 |
| MPtat | 0.010 | 0.010 | – |
| Total | 1.000 | 1.000 | 0.878 |
| Muscle . | Frac. part. jaw SP (G) . | Frac. part. jaw SP (P) . | Frac. part. jaw PS . |
|---|---|---|---|
| MAME | 0.546 | 0.580 | 0.699 |
| MPsT | 0.253 | 0.253 | 0.081 |
| MPt | 0.191 | 0.157 | 0.098 |
| MPtat | 0.010 | 0.010 | – |
| Total | 1.000 | 1.000 | 0.878 |
G, data from Gorniak et al. (Gorniak et al., 1982); P, data obtained by dissection of a specimen from the Prague Natural History Museum. MAME, m. adductor mandibulae externus; MPsT, m. pseudotemporalis; MPt, m. pterygoideus; MPtat, m. pterygoideus atypicus