Dizoniopsis brevicaput (FOSSIL) P. Lozouet, Lesport & Renard, 2001 †
Joculator breviculus Cecalupo & Perugia, 2017
Joculator brevis A. Cecalupo & I. Perugia,2012
Cerithiopsis bristolae F.C. Baker, G.D. Hanna& A.M. Strong, 1938
Joculator brucei (J.C. Melvill & R. Standen,1912)
Cerithiopsis brunnea K.H.J. Thiele, 1930
Cerithiopsis brunneoflavida H.B. Preston, 1905
Joculator brusonii A. Cecalupo & I. Perugia,2013
Clathropsis bugeae A. Cecalupo & I. Perugia,2014
Seila bulbosa (H.H. Suter, 1908)
Cerithiopsis buzzurroi (A. Cecalupo & E. Robba,2010)
Synthopsis caelata (A.W.B. Powell, 1930)
Clathropsis caledonica Cecalupo & Perugia, 2017
Joculator caliginosus A. Cecalupo & I. Perugia,2012
Joculator caloi A. Cecalupo & I. Perugia,2013
Cerithiopsis calvertensis (FOSSIL) Martin, 1904 †
Horologica camprinii A. Cecalupo & I. Perugia,2014
Synthopsis cancellata (C.F. Laseron, 1951)
Seila cantaurana (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Proseila capitata (K.H.J. Thiele, 1925)
Cerithiopsis capixaba R.M.A. Figueira& A. Pimenta, 2008
Tubercliopsis capricornia C.F. Laseron, 1956
Prolixodens captiosa A. Cecalupo & I. Perugia,2012
Potenatomus caputumere C.F. Laseron, 1956
Cerithiopsis caribbaea (W.M. Gabb, 1881)
Seila carinata (E.A. Smith, 1872)
Speculator cariosus A. Warén & P. Bouchet,2001
Cerithiopsis carmenensis (FOSSIL) Clark & J.W. Durham,1946 †
Joculator carpatinus A. Cecalupo & I. Perugia,2012
Cerithiopsis carpenteri P. Bartsch, 1911
Seila carquejai E. Rolán & F. Fernandes,1990
Cerithiopsis carrota (C.F. Laseron, 1956)
Joculator castaneus A. Cecalupo & I. Perugia,2013
Clathropsis castelinae A. Cecalupo & I. Perugia,2014
Tubercliopsis cataldinii A. Cecalupo & I. Perugia,2013