Calliostoma tauromiliare (FOSSIL) (F. Sacco, 1896 †)
Calliostoma tegulum (FOSSIL) A.A. Olsson, 1964 †
Fautor temporemutatus (FOSSIL) (Finlay, 1924 †)
Calliostoma tenebrosum J.F. Quinn, 1992
Falsimargarita terespira L.R.L. Simone, 2008
Calliostoma textor C. Vilvens, 2014
Calliostoma thachi A. Alf & D. Stratmann,2007
Falsimargarita thielei (C. Hedley, 1916)
Calliostoma thrincoma J.C. Melvill & R. Standen,1903
Calliostoma ticaonicum (A. Adams, 1851)
Calliostoma tigris (J.F. Gmelin, 1791)
Phenacomargarites titan (FOSSIL) B.A. Marshall, 2016 †
Calliostoma titanium J.H. McLean, 1984
Calliostoma tittarium W.H. Dall, 1927
Calliostoma tornatum (P.F. Röding, 1798)
Calliostoma torrei W.J. Clench & C.G. Aguayo,1940
Tristichotrochus tosaensis J.T. Kuroda & T. Habe,1961
Calliostoma toshiharui S. Kosuge, 1997
Calliostoma tournoueri (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1901 †
Calliostoma trachystum W.H. Dall, 1927
Calliostoma tranquebaricum (P.F. Röding, 1798)
Benthastelena transenna (FOSSIL) (H.H. Suter, 1917 †)
Callotrochus triadicus (FOSSIL) (Kutassy, 1927 †)
Calliostoma tricolor W.M. Gabb, 1865
Calliostoma triporcatum (P. Dautzenberg& H. Fischer, 1906)
Margarella trochoides (FOSSIL) S. Kiel & K. Bandel,2004 †
Calliostoma tropica (FOSSIL) Anderson, 1929 †
Margarella tropidophoroides (H. Strebel, 1908)
Calliostoma tropis (C. Vilvens, 2009)
Calliostoma trotini G.T. Poppe, S.P. Tagaro& H. Dekker, 2006
Calliostoma tsuchiyai (J.T. Kuroda & T. Habe,1971)
Calliostoma tumidosolidum C. Vilvens, 2014
Calliostoma tupinamba A.P.S. Dornellas, 2012
Calliostoma turbinum W.H. Dall, 1896
Calliostoma turgidulum (FOSSIL) (G.B. Brocchi, 1814 †)