Figure 19 in Untangling the threads: phylogenetic relationships of threadfins (Percomorphacea: Perciformes: Polynemidae)

Figure 19. Lateral view of leħ pectoral girdle of Polydactylus virginicus, Polynemidae. A, superficial layers of muscles. B, deepest layers of muscles (AbSR cut and removed). Abbreviations: AbPF, abductor profundus fili; AbPRc, abductor profundus radii pars ceterae; AbPRm, abductor profundus radii pars marginalis; AbSF, abductor superficialis fili; AbSR, abductor superficialis radii; AdSF, adductor superficialis fili; AdSR, adductor superficialis radii; ArV, arrector ventralis; Cl, cleithrum; F, pectoral filaments; OSV, compound ventral ramus of occipitospinal nerves; R, pectoral-fin rays; RLA-P, pectoral branch of the ramus lateralis accessorius; Sc, scapula; Scl, supracleithrum; SV1 and SV2, ventral ramus of spinal nerves 1 and 2. Scale bar: 2 mm. Adapted from Presti et al. (2020a).