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Horaiclavidae Bouchet, Kantor, Sysoev & Puillandre, 2011

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Shell generally small, 5-25 mm, usually 7-15 mm high, shortly claviform, with relatively low spire and a short, truncated, poorly differentiated siphonal canal. Subsutural ramp usually poorly differentiated. Axial sculpture almost always present, usually as strong sinuate ribs. Spiral sculpture normally weak or obsolete, often with glossy shell surface. Anal sinus on subsutural slope, weak to moderately deep, often constrained by callus. Protoconch of up to 3.5 medially carinate but otherwise smooth whorls when multispiral, but usually paucispiral and smooth. Operculum with terminal nucleus. Radular formula: 1-0-0-0-1. Marginal teeth duplex, with lanceolate major limb and usually narrow accessory limb, which is inserted in a shallow socket. Major limb often with angulation lateral to the place of accessory limb insertion. Rarely (some Paradrillia and Inkinga) the additional limb is of similar size to the major limb and the teeth become trough-shaped in transverse section, with a collar near the base. In several species of Horaiclavus the radular apparatus is absent.
Source: Bouchet et all, 2011. A new operational classification of the Conoidea (Gastropoda).

Možné záměny

This family shares many characters with Pseudomelatomidae, conchologically differing by a small stout shell with short siphonal canal and usually poorly developed spiral sculpture. Radulae also are rather similar to many representatives of Pseudomelatomidae and no clear cut distinctions were found. Genera currently included in Horaiclavidae have been usually included in the Crassispiridae (=Pseudomelatomidae), and the clear molecular-based division between the two clades seems to be not so clearly reflected in shell-based distinction. Therefore, the generic composition of the family is somewhat provisional and needs confirmation by further molecular data and/or a detailed analysis of conchological and radular characters.
Source: Bouchet et all, 2011. A new operational classification of the Conoidea (Gastropoda).

Zařazené taxony

Počet záznamů: 26

rod Anacithara Hedley, 1922
rod Aoteadrillia Powell, 1942
rod Austrocarina Laseron, 1954
rod Austrodrillia Hedley, 1918
rod Buchema Corea, 1934
rod Carinapex Dall, 1924
rod Ceritoturris Dall, 1924
rod Darrylia E.F. Garcia, 2008
rod Graciliclava Shuto, 1983
rod Haedropleura Bucquoy Dautzenberg & Dollfus, 1883
rod Horaiclavus Oyame, 1954
rod Inkinga Kilburn, 1988
rod Inodrillia Bartsch, 1943
rod Iwaoa Kuroda, 1953
rod Marshallena Allan, 1927
rod Mauidrillia Powell, 1942
rod Micropleurotoma Thiele, 1931
rod Naskia Sysoev & Ivanov, 1985
rod Nquma Kilburn, 1988
rod Paradrillia Makiyama, 1940
rod Pseudexomilus Powell, 1944
rod Psittacodrillia Kilburn, 1988
rod Sedilia W.G. Fargo, 1953
rod Striatoguraleus Kilburn, 1994
rod Thelecythara Woodring, 1928
rod Vexitomina Powell, 1942

Odkazy a literatura

EN The Interim Register of Marine and Nonmarine Genera [119817]

Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [] [jako Horaiclavidae Bouchet, Kantor, Sysoev & Puillandre, 2011]
Datum citace: 30. listopad 2019

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Taxony (nepotvrzené) - 4