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n.1.(Anat.) A ventral cartilaginous or bony element of the coracoid in the shoulder girdle of some vertebrates.
References in periodicals archive ?
Conversely, apomorphic coupling of structural components associated with decreased constructional variability and increased mechanical constraint has also been documented, such as that observed in the derived fusion of epicoracoid cartilages in frogs (Emerson 1983, 1984).
To date, perhaps the most direct test of the historical structural effect in a clade with a primitive morphological innovation has been that of Emerson (1988), who showed that fusion of the epicoracoid cartilages in frogs (eight phylogenetically independent cases of which were analyzed) resulted in a predictable historical pattern of shape change in descendant taxa.