part of develops from start stage end stage pectoral girdle scapula scapulae Endochondral bone that is located medial to the cleithrum, and articulates ventrally with the coracoid, medially with the mesocoracoid when the later is present and posteriorly with the upper one to three proximal radials. The scapula develops from the scapulocoracoid cartilage and belongs to the primary pectoral girdle. It may be perforated by the scapular foramen or it may be notched ventrally and forms together with a similar notch of the coracoid the scapulocoracoid foramen. ZFA:0000583 zebrafish_anatomy TAO:0000583 scapulocoracoid endochondral bone larval:days 21-29 adult