Eunema salopiense (FOSSIL) Pitcher, 1939 †
Lophospira sandbiana (FOSSIL) Ebbestad & al., 2013 †
Worthenia schirjaevensis (FOSSIL) Stuckenberg, 1905 †
Worthenia sculpta (FOSSIL) (B. Phillips, 1836 †)
Loxoplocus sedgwicki (FOSSIL) J. Donald, 1906 †
Lophospira selecta (FOSSIL) (Billings, 1865 †)
Gyronema semicarinatum (FOSSIL) (Salter, 1859 †)
Lophospira serrulata (FOSSIL) (Salter, 1859 †)
Lophospira shallockensis (FOSSIL) Longst, 1924 †
Worthenia sigaretoides (FOSSIL) E.A.L. Kittl, 1894 †
Loxoplocus silurica (FOSSIL) (d'Eichwald, 1840 †)
Ruedemannia sodalis (FOSSIL) (E.F.R.K. Koken, 1897 †)
Loxoplocus soluta (FOSSIL) (J.J.F. Whiteaves,1884 †)
Paupospira soluta (FOSSIL) (E.F.R.K. Koken& J. Perner, 1925 †)
Worthenia speciosa (FOSSIL) (F.B. Meek& A.H. Worthen, 1860 †)
Triredimiculum spira (FOSSIL) C.O. Waterhouse, 1983 †
Lophospira spironema (FOSSIL) Ulrich & Scofield, 1897 †
Ruedemannia striatula (FOSSIL) (J. Perner, 1907 †)
Worthenia strigata (FOSSIL) Böhm, 1895 †
Worthenia strigillata (FOSSIL) Herrick, 1888 †
Eunema strigillatum (FOSSIL) Salter, 1859 †
Lophospira subalata (FOSSIL) E.F.R.K. Koken& J. Perner, 1925 †
Lophospira subglobosa (FOSSIL) J. Donald, 1906 †
Worthenia subplicata (FOSSIL) (Klipstein, 1843 †)
Ruedemannia subrobusta (FOSSIL) (J. Perner, 1907 †)
Worthenia substriata (FOSSIL) (Klipstein, 1843 †)
Worthenia subtilis (FOSSIL) E.A.L. Kittl, 1891 †
Paupospira sumnerensis (FOSSIL) (Safford, 1869 †)
Lophospira superba (FOSSIL) Butts, 1926 †
Worthenia superstes (FOSSIL) J. Szabo, 1980 †
Worthenia supraornata (FOSSIL) E.A.L. Kittl, 1894 †
Arjamannia sybellina (FOSSIL) (Billings, 1866 †)
Worthenia tabulata (FOSSIL) (T.A. Conrad, 1835 †)
Yochelsonospira tenuilineata (FOSSIL) (Girty, 1929 †)
Paupospira tenuistriata (FOSSIL) (Ulrich & Scofield,1897 †)