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Architectonicidae,
common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrast ...
the staircase shells or sundials, are a
family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideal ...
of
sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ab ...
s, marine
gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. ...
mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000  extant species of molluscs are recognized. The number of fossil species is es ...
s in the informal group "Lower Heterobranchia" (= Allogastropoda) of the clade
Heterobranchia Heterobranchia, the ''heterobranchs'' (meaning "different-gilled snails"), is a taxonomic clade of snails and slugs, which includes marine, aquatic and terrestrial gastropod mollusks. Heterobranchia is one of the main clades of gastropods. Cur ...
. 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, 1930Mestayer (1930). ''Trans. New Zealand Inst.'' 61: 145. * '' 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 (Grandeliacus)'' Iredale, 1957 (alternate representation) * †'' Granoheliacus'' Melone & Taviani, 1985 * †'' Granosolarium'' Sacco, 1892 * '' Gyriscus'' Tiberi, 1867 * '' Heliacus''
d'Orbigny Alcide Charles Victor Marie Dessalines d'Orbigny (6 September 1802 – 30 June 1857) was a French naturalist who made major contributions in many areas, including zoology (including malacology), palaeontology, geology, archaeology and anthropol ...
, 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 * '' Redivivus''Melone & Taviani, 1985 * †'' Rinaldoconchus'' Bandel, 1988 * '' Solatisonax'' Iredale, 1931 * '' Spirolaxis'' di Monterosato, 1913 * †'' Stellaxis'' Dall, 1892 * '' Teretropoma'' Rochebrune, 1881 represented as ''Heliacus (Teretropoma)'' Rochebrune, 1881 (alternate representation) * '' Torinista'' Iredale, 1936 represented as ''Heliacus (Torinista)'' Iredale, 1936 (alternate representation) * †'' 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'' (Torinista) 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


References

* Bieler R. (1993). ''Architectonicidae of the Indo-Pacific (Mollusca, Gastropoda)''. Abhandlungen des Naturwissenschaftlichen Vereins in Hamburg (NF) 30: 1–376 * Bouchet P. & Rocroi J.-P. (2005) ''Classification and nomenclator of gastropod families.'' Malacologia 47(1–2): 1–397 * Marco Taviani, ''Revisione delle Architectonicidae del Mediterraneo''; Milano, 1984


Further reading

* Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979


External links

{{Taxonbar, from=Q1947528 Taxa named by John Edward Gray