phyllobranchia
/ˌfɪlə(ʊ)ˈbraŋkɪə/Zoology
noun
A type of gill occurring in some decapod crustaceans in which the axis bears two rows of close-set lamellar plates.
Origin
Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From phyllo- + ancient Greek βράγχια gills.