FIG. 4 in Pennaraptoran Theropod Dinosaurs Past Progress And New Frontiers

FIG. 4. Ancestral-state reconstruction (above and following two pages) of the six functional characters across Pennaraptora under squared-change parsimony (above and on next two pages). A. Anterior jaw-closing mechanical advantage, AMA. B. Posterior jaw-closing mechanical advantage, PMA. C. Jaw-opening mechanical advantage, OMA. D. Relative articular offset, AO. E. Relative maximum mandible height, MMH. F. Relative average mandible height, AMH. Tree topology based on Lü et al. (2017) and Pei et al. (in press). Reconstructed nodal values for select nodes are given in table 2.