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;
Origin ID : 0010019;
develops from
- part of
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.
