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external gill

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external gill [ek¦stərn·əl ′gil]
(zoology)
A gill that is external to the body wall, as in certain larval fishes and amphibians, and in many aquatic insects.
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The last stage juveniles retain external gills for about one and a half years.
Cryptobranchid update: eastern hellbender/Ozark hellbender "North ... by Hayes, Thomas / Endangered Species Update
The fine ash preserved many of the doomed creatures' soft tissues, including eye lenses, external gills, and tadpole-like tails.
Fossils of early salamanders found. (Paleontology) by Science News
There, they spend all their lives in a larval form, complete with external gills and a tadpole-like tail.
Meet the salamander by Cohn, Jeffrey P. / Americas (English Edition)
 
 
 
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