Sessilia

《英文msh詞典》Sessilia
[同義詞] Sessilia
[主題詞] Thoracica
[英文釋義] A superorder of marine CRUSTACEA,free swimming in the larval state,but permanently fixed as adults. There are some 800 described species,grouped in several genera,and comprising of two major orders of barnacles: stalked (Pedunculata) and sessile (Sessilia).