Palaeoneilo subexcentrica (FOSSIL) C. Chen, 1976 †
Neilo sublaevis (FOSSIL) J. Marwick, 1926 †
Nuculites suboblongatus (FOSSIL) Kobayashi, 1934 †
Palaeoneilo suborbicularis (FOSSIL) Reed, 1927 †
Palaeoneilo subtenella (FOSSIL) Krumbeck, 1924 †
Palaeoneilo sunanensis (FOSSIL) H.X. Liu, 1976 †
Malletia surinamensis A. Sanders & J.A. Allen,1985
Palaeoneilo symmetricus (FOSSIL) Y. Fang, 1987 †
Anthraconeilo taffiana (FOSSIL) Girty, 1912 †
Taimyrodon taimyrensis (FOSSIL) Kurushin, 1985 †
Malletia takaii T.A. Okutani, 1968
Malletia talama W.H. Dall, 1916
Malletia taliensis (T.C. Lan & Y.C. Lee,2001)
Palaeoneilo tebagaensis (FOSSIL) Termier & Termier, 1959 †
Malletia tenera (FOSSIL) (J. Marwick, 1926 †)
Palaeoneilo thorslundi (FOSSIL) Isberg, 1934 †
Palaeoneilo tirolensis (FOSSIL) Woehrmann, 1889 †
Nuculites trapezoidalis (FOSSIL) L. Waagen 1881 †
Ekstadia tricarinata (FOSSIL) T. Soot-Ryen, 1964 †
Malletia tripartita B. Prashad, 1932
Nuculites triqueter (FOSSIL) T.A. Conrad, 1841 †
Malletia truncata W.H. Dall, 1908
Cadomia typa (FOSSIL) Tromelin, 1877 †
Protonucula verconis B.C. Cotton, 1930
Katadesmia vincula (W.H. Dall, 1908)
Neilo wairoana (FOSSIL) J. Marwick, 1965 †
Neilo waitaraensis (FOSSIL) J. Marwick, 1926 †
Malletia wajampolkensis (FOSSIL) Krishtofovich, 1972 †
Nuculites wattii (FOSSIL) R. Tate, 1896 †
Palaeoneilo yanjiensis (FOSSIL) H. Guo, 1985 †
Palaeoneilo yongdingensis (FOSSIL) Li & Ding, 1982 †