Figure 4
From: Anatomy and evolution of the pectoral filaments of threadfins (Polynemidae)
Lateral view of left pectoral girdle of Parapolynemus verekeri, Polynemidae. (a) superficial layers of muscles; (b) deepest layers of muscles (AbSR, AbSF, OSV, Scl, RLA-OP, SV1, and SV2 removed). AbPF, abductor profundus filamentaris; AbPRc, abductor profundus radialis p. ceterae; AbPRm, abductor profundus radialis p. marginalis; AbSF, abductor superficialis filamentaris; AbSR, abductor superficialis radialis; AdSF, adductor superficialis filamentaris; AdSR, adductor superficialis radialis; ArV, arrector ventralis; Cl, cleithrum; Co, coracoid; F, pectoral filaments; OSV, compound ventral ramus of occipito-spinal nerves; R, pectoral-fin rays; RLA-OP, orbito-pectoralis branch of the ramus lateralis accessorius; Sc, scapula; Scl, supracleithrum; SV1–2, ventral ramus of spinal nerves 1–2.
