Heliacus proteus (R. Bieler, 1993)
Discotectonica pseudoperspectiva (G.B. Brocchi, 1814)
Architectonica purpurata (R.B. Hinds, 1844)
Architectonica puruensis (FOSSIL) (K. Martin, 1914 †)
Architectonica quadriserata (FOSSIL) G.B. Sowerby, 1850 †
Solatisonax radialis (W.H. Dall, 1908)
Psilaxis radiatus (P.F. Röding, 1798)
Adelphotectonica reevei (S.C.T. Hanley, 1862)
Architectonica regia (S.C.T. Hanley, 1862)
Solatisonax rehderi R. Bieler, 1993
Disculus renati (P. Dautzenberg, 1894)
Heliacus reticulatus (FOSSIL) D.T. Dockery, 1993 †
Calodisculus retifera (FOSSIL) (W.H. Dall, 1892 †)
Architectonica rhicna (FOSSIL) W.P. Woodring, 1959 †
Heliacus riisei (O.A.L. Mörch, 1875)
Heliacus rotula (R.N. Kilburn, 1975)
Spirolaxis rotulacatharinea (J.C. Melvill & R. Standen,1903)
Solatisonax rudigerbieleri D. de Oliveira Tenório, J.C.N. Barros& al., 2011
Architectonica saghaensis (FOSSIL) Abbass, 1967 †
Architectonica scrobiculata (FOSSIL) (T.A. Conrad, 1833 †)
Architectonica sedanensis (FOSSIL) (K. Martin, 1905 †)
Architectonica sedgwickii (FOSSIL) Seeley †
Discotectonica semisquamosa (FOSSIL) (H.G. Bronn, 1831 †)
Discotectonica seniscula (FOSSIL) (J. Marwick, 1931 †)
Pseudotorinia sestertius R. Bieler, 1993
Heliacus siculus (F.J. Cantraine, 1842)
Solatisonax sigsbeei (W.H. Dall, 1889)
Basisulcata simplex (FOSSIL) (H.G. Bronn, 1831 †)
Architectonica sokkohensis (FOSSIL) (K. Martin, 1916 †)
Architectonica songoensis (FOSSIL) (K. Martin, 1914 †)
Solariaxis spectabilis (FOSSIL) (Sowerby, 1850 †)
Architectonica spencerii E.A. Allen, 1858
Architectonica spinogula (FOSSIL) C.R. Laws, 1941 †
Architectonica stellata (R.A. Philippi, 1849)
Architectonica stephanense (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1921 †