Endochondral bone that is dorsoventrally compressed and provides attachment site for muscles of the pectoral appendage.
Comment:
[development-note] "chick scapula is of dual origin and segmentally organized"; [taxon-note] "present in all tetrapods with even vestiges of anterior limbs, e.g., turtles & birds & mammals." xsd:string {source="ISBN:978-0-12-319060-4"}