Xenophora solida (FOSSIL) (A. von Koenen †)
Xenophora spiralis (FOSSIL) Garvie, 2013 †
Stellaria subextensa (FOSSIL) d'Orbigny, 1852 †
Tugurium subextensum (FOSSIL) (A.V.M.D. D'Orbigny,1852 †)
Xenophora tatei (FOSSIL) G.F. Harris, 1897 †
Xenophora tenuis H.C. Fulton, 1938
Xenophora terpstrai (FOSSIL) A. Dey, 1961 †
Stellaria testigera (FOSSIL) (H.G. Bronn, 1831 †)
Stellaria testigera digitata E.C. Von Martens, 1878
Stellaria testigera profunda W.F. Ponder, 1983
Xenophora textilina (FOSSIL) W.H. Dall, 1892 †
Xenophora umbilicaris (D.C. Solanderin G. Brander, 1766)
Xenophora umbilicaris schroeteri (J.F. Gmelin, 1791)
Endoptygma umbilicata (FOSSIL) (Tourney, 1854 †)