System Glossary
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Definition of Term

(English) The lower, paired endochondral bone on which the pterygials or actinosts of the pectoral fin rest. Dorsally it has a notch which, with a similar ventral notch on the scapular, frames the scapular foramen. It attaches anteriorly to the cleithrum. (See also: actinost, scapular, cleithrum)

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