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Preferred Label : spiracle (sensu Vertebrata);

Uberon definition : A small hole behind each eye that opens to the mouth in some fish. In the primitive jawless fish the first gill opening immediately behind the mouth is essentially similar to the other gill openings.;

Uberon synonym : vertebrate spiracle;

Uberon broad term : spiracle;

Uberon Taxon note : The spiracle is still found in all cartilaginous fish except chimaeras, and in bony fishes in the coelacanth, sturgeon, paddlefish and bichirs. It is also seen as an otic notch in the skull of the extinct labyrinthodonts, and is thought to be associated with the ear opening in amniotes and frogs;

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A small hole behind each eye that opens to the mouth in some fish. In the primitive jawless fish the first gill opening immediately behind the mouth is essentially similar to the other gill openings.

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27/07/2025


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