1929 represented as Rhinoclavis Swainson, 1840 Vertagus Schumacher, 1817: synonym of Rhinoclavis Swainson, 1840 References Houbrick R. S. (1978). The family Cerithiidae in the Indo-Pacific. Part 1. The genera Rhinoclavis, Pseudovertagus and Clavocerithium. Monographs of Marine Mollusca 1: 1–130. Houbrick R. S. (1992). Monograph of the genus Cerithium Bruguiere in the Indo-Pacific (Cerithiidae--Prosobranchia). 211 p., Smithsonian Institution Press (Washington, D.C.)], PDF. Wood, Elvira. The Phylogeny of Certain Cerithidae, Annals of the New York Academy of Sciences, Volume XXIV, New York, May 1910, pp. 1–92, Pl. I-IX. External links Miocene Gastropods and Biostratigraphy of the Kern River Area, California; United States Geological Survey Professional Paper 642 Houbrick, Richard S. "Phylogenetic relationships and generic review of the Bittiinae (Prosobranchia: Cerithioidea)." Malacologia (1993). Articles containing video clips