Fig. 10
From: Evolution of the facial musculature in basal ray-finned fishes
Maximum parsimony optimizations of the identified character states of the facial musculature superimposed on cladogram of basal gnathostomes [10, 52, 53]. Characters numbered as in text. Arrowheads indicate clades with synapomorphies affected by alternative optimizations. a Accelerated transformation (AccTran). b Delayed transformation (DelTran)