part_of skeletal subdivision pectoral girdle skeleton scapular complex A scapular complex is described in placoderms (Goujet and Young, 1995). Skeletal subdivision of dermal bones that may include the anterolateral plate (AL), the spinal process (Sp), and anteroventral plate (AV) and other dermal bones that are part of the pectoral girdle. VSAO:0000171 vertebrate_skeletal_anatomy