System Glossary
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Definition of Term

epural
(english) An elongate detached bone above the urostyle and behind the last neural spine supporting caudal fin rays. Apparently derived from neural spines or the urostylic centra; dorsal homologues of the hypurals. Vary in number between one in advanced fishes to three in primitive actinopterygians. (See also: hypurals, urostyle, caudal fin)

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