資料來源 : Webster's Revised Unabridged Dictionary (1913)

Zygobranchia \Zyg`o*bran"chi*a\, n. pl. [NL., from Gr. ? a yoke
   + ? a gill.] (Zo["o]l.)
   A division of marine gastropods in which the gills are
   developed on both sides of the body and the renal organs are
   also paired. The abalone ({Haliotis}) and the keyhole limpet
   ({Fissurella}) are examples.