Architectonicidae
Architectonicidae, common name the staircase shells or sundials, are a family of sea snails, marine gastropod mollusks in the informal group "Lower Heterobranchia" of the clade Heterobranchia.
The extinct families † Amphitomariidae Bandel, 1994 and † Cassianaxidae Bandel, 1996 belong to the same superfamily.Genera
Genera within the family Architectonicidae include:
Adelphotectonica Bieler, 1987 Aguayodiscus Jaume & Borro, 1946 Architectonica Röding, 1798 - type genus Awarua Mestayer, 1930 Basisulcata Melone & Taviani, 1985 †Calodisculus Rehder, 1935 †Climacopoma Fischer, 1885 †Dinaxis Dall in Aldrich, 1895 †Discotectonica Marwick, 1931 †Disculus Deshayes, 1863 †Eosolarium Chavan, 1947 †Ewekorolaxis Adegoke, 1977 Grandeliacus Iredale, 1957 represented as Heliacus Iredale, 1957 †Granoheliacus Melone & Taviani, 1985 †Granosolarium Sacco, 1892 Gyriscus Tiberi, 1867 Heliacus d'Orbigny, 1842 †Intitectonica Frassinetti & Covacevich, 1984 †Nigerialaxis Adegoke, 1977 †Nipteraxis Cossmann, 1916 †Nodosolarium Sacco, 1892 Paurodiscus Rehder, 1935 Philippia J. E. Gray, 1847 †Platylaxis Adegoke, 1977 Pseudomalaxis P. Fischer, 1885 †Pseudotorinia Sacco, 1892 Psilaxis Woodring, 1928 †Punjabia Eames, 1952 Pyrgoheliacus Bieler, 1987 RedivivusMelone & Taviani, 1985 †Rinaldoconchus Bandel, 1988 Solatisonax Iredale, 1931 Spirolaxis di Monterosato, 1913 †Stellaxis Dall, 1892 Teretropoma Rochebrune, 1881 represented as Heliacus Rochebrune, 1881 Torinista Iredale, 1936 represented as Heliacus Iredale, 1936 †Trimalaxis Garvie, 1996 †Wangaloa Finlay, 1927 Zerotula Finlay, 1927;Genera brought into synonymy:
Acutitectonica Habe, 1961: synonym of Discotectonica Marwick, 1931 Astronacus Woodring, 1959: synonym of Heliacus Iredale, 1936 Claraxis Iredale, 1936: synonym of Granosolarium Sacco, 1892 Discosolis Dall, 1892: synonym of Pseudomalaxis P. Fischer, 1885 Mangonuia Mestayer, 1930: synonym of Pseudomalaxis P. Fischer, 1885 †Patulaxis Dall, 1892: synonym of † Climacopoma Fischer, 1885 Russetia Garrard, 1961: synonym of Discotectonica Marwick, 1931 †Solariaxis Dall, 1892 : synonym of Granosolarium Sacco, 1892 Solarium Lamarck, 1799: synonym of Architectonica Röding, 1798 Torinia Gray, 1842 : synonym of Heliacus'' d'Orbigny, 1842
