Strict consensus, focused on the phylogenetic position of T. gertschi , of the two equally parsimonious trees derived from the TNT analysis of the morphological character matrix. Bremer support values are given in bold circled numbers. Unambiguous, non-homoplastic character optimizations are detailed below the tree in an abbreviated version. Non-homoplastic character changes are indicated with black squares, homoplastic characters with white squares. Trait numbers are indicated above squares, state changes below. For muscle references see main text. See additional file 6 for a complete tree with all pterygote taxa.