prosobranchiata
Pros`o*bran`chi*a"ta, n. pl. Etym: [NL., fr. Gr. (Zoöl.) Defn: The highest division, or subclass, of gastropod mollusks, including those that have the gills situated anteriorly, or forward of the heart, and the sexes separate.
Pros`o*bran`chi*a"ta, n. pl. Etym: [NL., fr. Gr. (Zoöl.) Defn: The highest division, or subclass, of gastropod mollusks, including those that have the gills situated anteriorly, or forward of the heart, and the sexes separate.