S — Sculptile to Scutibranchiata (Part 7 of 7)

Scutibranchiata
(||Scu`ti*bran`chi*a"ta) n. pl. [NL. See Scutum, and Branchia.] (Zoöl.) An order of gastropod Mollusca having a heart with two auricles and one ventricle. The shell may be either spiral or shieldlike.

It is now usually regarded as including only the Rhipidoglossa and the Docoglossa. When originally established, it included a heterogenous group of mollusks having shieldlike shells, such as Haliotis, Fissurella, Carinaria, etc.