Horaiclavidae
Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
In 2011 this family was split off from the family Pseudomelatomidae by Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. in their publication "A new operational classification of the Conoidea". It forms a clade together with the family Clavatulidae. It has many characters in common with the family Pseudomelatomidae, except the smaller shell with a low spire, the short siphonal canal and a weak or absent spiral sculpture. The radular formula is 1-0-0-0-1, but some species in this family lack a radula.
Genera
Genera within the family Horaiclavidae include:Anacithara Hedley, 1922Anguloclavus Shuto, 1983 Aoteadrillia Powell, 1942Asperosculptura Ardovini, Poppe & Tagaro, 2021- † Atoma Bellardi, 1875 Austrocarina Laseron, 1954Austrodrillia Hedley, 1918
- † Boreodrillia Sorgenfrei, 1958 Buchema Corea, 1934Carinapex Dall, 1924Ceritoturris Dall, 1924Darrylia García, 2008Epideira Hedley, 1918Graciliclava Shuto, 1983Haedropleura Bucquoy, Dautzenberg & Dollfus, 1883Horaiclavus Oyama, 1954 - type genusInodrillia Bartsch, 1943 - synonyms: Inodrillara Bartsch, 1943; Inodrillina Bartsch, 1943Inkinga Kilburn, 1988Iwaoa Kuroda, 1940Marshallena Allan, 1927 - synonym: Sugitanitoma Kuroda, 1959Mauidrillia Powell, 1942Micropleurotoma Thiele, 1929Naskia Sysoev & Ivanov, 1985Nquma Kilburn, 1988Paradrillia Makiyama, 1940 - synonyms: Vexitomina Powell, 1942; Alticlavatula MacNeil, 1960Pseudexomilus Powell, 1944Psittacodrillia Kilburn, 1988Striatoguraleus Kilburn, 1994Vexitomina Powell, 1942