Belongs within: Neogastropoda.Contains: Costellaria, Vexillum. The Costellariidae, ribbed mitres, are a group of predatory gastropods with shells resembling those of the mitres of the Mitridae but with strong axial sculpture. Most species lack an operculum though molecular data support inclusion of the operculate genera Latiromitra and Ceratoxancus as basal costellariids. The radula possesses unicuspid lateral… Continue reading Costellariidae