Lioglyphostoma tenuata (FOSSIL) F.S. MacNeil, 1960 † Okinawa12,4 mm
Crassispira tepocana W.H. Dall, 1919 Costa Rica22 mm
Comitas terrisae (FOSSIL) P. Vella, 1954 †
Antiplanes thalaea (W.H. Dall, 1902) Alamitos Bay, California25 mm
Funa theoreta (J.C. Melvill, 1899) South Africa, Natal, Durban Bay15 mm
Compsodrillia thestia (W.H. Dall, 1919) Ecuador11,2 mm
Comitas thisbe (E.A. Smith, 1906) Sri Lanka
Comitas thisbe diomedea A.W.B. Powell, 1969 China, Zhejiang44 mm
Thelecytharella timorensis (M.M. Schepman, 1913) Timor Est
Hindsiclava tippetti E.J. Petuch, 1987 Venezuela28,7 mm
Crassispira tittabweensis (FOSSIL) E.W. Vredenburg, 1921 † Myanmar, Magway, Thayetmyo
Brachytoma tjemoroensis (FOSSIL) Martin, 1903 † India, Meghalaya
Pseudomelatoma torosa (P.P. Carpenter, 1864) USA, California
Epidirona torquata (C. Hedley, 1922) Tasmania
Comitas torquayensis A.W.B. Powell, 1944 Australia
Compsodrillia torvita (FOSSIL) F.S. MacNeil, 1960 † Okinawa38 mm
Comitas trailli (F.W. Hutton, 1873) New Zealand, Stewart Island
Megasurcula tremperiana (W.H. Dall, 1911) California, Newport
Crassispira trencarti P. Ryall, J. Horro& E. Rolán, 2009 Senegal, Dakar12 mm
Compsodrillia tricatenaria (FOSSIL) (T.A. Conrad, 1862 †)
Crassispira trimariana H.A. Pilsbry & H.N. Lowe,1932 Mexico West12 mm
Compsodrillia tristicha (W.H. Dall, 1889) Brazil, Santa Catarina19,2 mm
Otitoma tropispira Morassi, Nappo& Bonfitto, 2017
Crassispira tryoni W.H. Dall Caribbean
Epidirona tuberculata C.F. Laseron, 1954 Australia, Cape Moreton
Knefastia tuberculifera (W.J. Broderip& G.B. I Sowerby, 1829) Mexico, Santa Cruz60 mm
Brachytoma tuberosa (E.A. Smith, 1875) Philippines, Aliguay Island37 mm
Crassispira tuckerana A. Bonfitto & M. Morassi,2011 Somalia
Crassispira tuckeri (FOSSIL) J. Le Renard, 1994 † France, Paris Basin12 mm
Crassispira turricula (G.B. I Sowerby, 1834) Panama West37 mm
Leucosyrinx turritus A.V. Sysoev, 1990
Crassispira tyloessa (FOSSIL) W.P. Woodring, 1970 † Panama, Colón
Lioglyphostoma tyro (FOSSIL) J. Gardner, 1937 † Florida, Alum Bluff formation8 mm
Pilsbryspira umbrosa (J.C. Melvill, 1923) Japan, Nagasaki
Compsodrillia undatichorda J.H. McLean& L.H. Poorman, 1971 Galapagos