Heliacus madurensis (M.M. Schepman, 1909) Australia, Bustard Head
Architectonica mainwaringi (FOSSIL) L.R. Cox, 1930 † Pakistan
Heliacus malani (P. Dautzenberg, 1910) Angola4,5 mm
Architectonica marginalis (FOSSIL) G.P. Deshayes, 1863 † France, Paris Basin8 mm
Architectonica marginata (G.P. Deshayes, 1832 ) France, Paris Basin3 mm
Granosolarium marwicki (FOSSIL) (R.S. Allan, 1926 †)
Eosolarium massei (FOSSIL) A.L. Chavan, 1947 †
Architectonica maxima R.A. Philippi, 1849 Philippines, Masbate Island70 mm
Heliacus mazatlanicus H.A. Pilsbry & H.N. Lowe,1932 Ecuador6 mm
Architectonica meekana (FOSSIL) W.M. Gabb † Alabama
Pseudotorinia melajoensis (FOSSIL) P.O. Jung, 1969 † Trinidad and Tobago, Sangre Grande
Architectonica micromphala (FOSSIL) (A.E.M. Cossmann& M.A. Peyrot, 1921 †) France, Aquitaine11 mm
Heliacus mighelsi (R.A. Philippi, 1853) Hawaii8,8 mm
Solariaxis millegranum (FOSSIL) (J.B.P.A. Lamarck,1822 †)
Solariaxis millegranum subcanaliculatum (FOSSIL) (A.V.M.D. D'Orbigny,1852 †) Germany, North Westfalia11 mm
Granosolarium mirabile (M.M. Schepman, 1909) Japan, Tosa Bay11,3 mm
Nipteraxis misera (FOSSIL) (F. Dujardin, 1837 †) France, Aquitaine6 mm
Architectonica modesta (R.A. Philippi, 1849) Philippines, Masbate Island34 mm
Architectonica montense (FOSSIL) (Briart & Cornet,1887 †) Ukraine10 mm
Architectonica narica (FOSSIL) E.W. Vredenburg, 1928 † Pakistan
Architectonica neerlandica G. Spaink, 1968 Germany4,8 mm
Heliacus nereidis (R. Bieler, 1993) Australia, Pelsart Bank
Wangaloa ngaparaensis (FOSSIL) (H.H. Suter, 1917 †)
Discotectonica nipponica (J.T. Kuroda & T. Habe,1971) China, Zhejiang12,2 mm
Architectonica nitens (FOSSIL) Noetling, 1901 † India, Meghalaya
Architectonica nobilis P.F. Röding, 1798 Panama, Gulf of Chiriqui
Adelphotectonica nomotoi (S. Kosuge, 1979) South Africa, Durban25 mm
Solariaxis nomurai (FOSSIL) F.S. MacNeil, 1960 † Okinawa
Architectonica nubila K.T. Menke, 1849
Discotectonica nuda (FOSSIL) M. Harzhauser, 2014 † India
Pseudotorinia numulus (K.H. Barnard, 1963) South Africa
Pseudotorinia nupera (FOSSIL) (T.A. Conrad, 1834 †) Florida
Pseudomalaxis obolos (K.H. Barnard, 1963) South Africa, Natal, Richards Bay9,2 mm
Architectonica obolus (FOSSIL) J.F. Bayan, 1873 † France, Paris Basin11 mm
Architectonica obtusa (FOSSIL) (H.G. Bronn, 1831 †) Germany9 mm