pectoral propterygium
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propterygium — (plural propterygia)) the anterior basal cartilage of the paired fins of Elasmobranchii, Holocephali and primitive Teleostomi. It is often the shortest of the three basal cartilage. In skates and rays the pectoral propterygium is elongated… … Dictionary of ichthyology
skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… … Universalium
