Murex torturosus (FOSSIL) Sowerby, 1823 † UK, England, Norfolk
Ocenebra torulosa (FOSSIL) (J.P.S. Grateloup,1840 †) France, Aquitaine
Monstrotyphis tosaensis (M. Azuma, 1960) South China Sea18 mm
Cronia tosana (H.A. Pilsbry, 1904) Japan, Kochi
Babelomurex tosanus (Y. Hirase, 1908) Taiwan31 mm
Trachypollia trachea (FOSSIL) (J. Gardner, 1944 †) Florida
Laevityphis transcurrens (E.C. Von Martens, 1902) Mozambique12 mm
Pteropurpura transkeiana R. Houart, 1991 South Africa, Algoa Bay28 mm
Vaughtia transkeiensis (R. Houart, 1987) South Africa, Transkei
Murex trapa P.F. Röding, 1798 Philippines, Zamboanga149 mm
Axymene traversi (F.W. Hutton, 1873) New Zealand, Chatham Islands
Trophon triacanthus Z.J.A. De Castellanos, E. Rolán& S. Bartolotta, 1987 South Argentina
Pteropurpura trialata (G.B. II Sowerby, 1834) California. Los Angeles67 mm
Pteropurpura trialata alba S.S. Berry, 1912 California. Los Angeles64 mm
Vitularia triangularis L. Bozzetti, 2009 Madagascar, Vinanibe
Acanthina triangularis (FOSSIL) DeVries, 2003 † Chile, Antofagasta, Antofagasta
Acanthais triangularis (H.M.D. de Blainville,1832) Panama18 mm
Tripterotyphis triangularis (Adams, 1855) Cuba9,3 mm
Boreotrophon triangulatus (P.P. Carpenter, 1864) California, Redondo Beach
Murex tribulus C. Linnaeus, 1758 Taiwan92 mm
Pteropurpura tricarinata (FOSSIL) (J.B.P.A. Lamarck,1803 †) France, Aquitaine
Pseudoperissolax tricarnatus (FOSSIL) (C.S. Weaver, 1905 †)
Dermomurex triclotae (R. Houart, 2001) New Caledonia, Koumac13,1 mm
Thais tricolorata L. Bozzetti, 2010 Madagascar
Vokesimurex tricoronis (S.S. Berry, 1960) Brazil, Santos47 mm
Ecphora tricostata (FOSSIL) Martin, 1904 † USA, Maryland
Ecphora tricostata (FOSSIL) Ward, 1992 † USA, Delaware
Ocenebra tridentatus (FOSSIL) R. Tate, 1888 †
Murex trifascialis (FOSSIL) J.P.S. Grateloup, 1840 † France, Aquitaine
Pterochelus triformis (L.A. Reeve, 1845) Australia, Port Lincoln70 mm
Coralliophila trigoi P. Mariottini, C. Smriglio& E. Rolán, 2005 Spain, Almeria20 mm
Chicoreus trigonalis (FOSSIL) Gábor, 1936 † Hungary, Bükk39 mm
Murex trigonus (FOSSIL) M. Rouault, 1849 † France, Aquitaine24 mm
Murex trinchinopolitensis E. Forbes, 1846
Murex trinodosus (FOSSIL) R. Tate, 1888 †