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Tristichotrochus
Tristichotrochus haliarchus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Calliostomatidae
Genus:	Tristichotrochus Ikebe, 1942
Type species
Calliostoma aculeatum G. B. Sowerby III, 1912
Synonyms
Calliostoma (Tristichotrochus) Ikebe, 1942

Tristichotrochus is a genus of sea snails, marine gastropod mollusks, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.

Species

Species within the genus Tristichotrochus include:

• Tristichotrochus aculeatus (G. B. Sowerby III, 1912)
• Tristichotrochus consors (Lischke, 1872)
• Tristichotrochus gendalli (B. A. Marshall, 1979)
• Tristichotrochus haliarchus (Melvill, 1889)
• Tristichotrochus multiliratus (G. B. Sowerby III, 1875)
• Tristichotrochus shingawaensis (Tokunaga, 1906)
• Tristichotrochus tosaensis Kuroda & Habe, 1961
• Tristichotrochus unicus (Dunker, 1860)

The following species were brought into synonymy:

• Tristichotrochus amamiensis Sakurai, 1994: synonym of Calliostoma amamiense (Sakurai, 1994) (original combination)
• Tristichotrochus canaliculatus Sasao & Habe, 1973: synonym of Calliostoma canaliculatum (Sasao & Habe, 1973)(original combination)
• Tristichotrochus crossleyae (E. A. Smith, 1910): synonym of Calliostoma crossleyae E. A. Smith, 1910 (superseded combination)
• Tristichotrochus galea Sakurai, 1994: synonym of Calliostoma galea (Sakurai, 1994)
• Tristichotrochus hayamanus Kuroda & Habe, 1971: synonym of Calliostoma hayamanum (Kuroda & Habe, 1971) (original combination)
• Tristichotrochus ikukoae (Sakurai, 1994): synonym of Calliostoma hayamanum (Kuroda & Habe, 1971) (original combination)
• Tristichotrochus iris Kuroda & Habe in Habe, 1961: synonym of Calliostoma iris (Kuroda & Habe, 1961) (original combination)
• Tristichotrochus iwaotakii Azuma, 1961: synonym of Calliostoma iwaotakii (Azuma, 1961)
• Tristichotrochus katoi Sakurai, 1994: synonym of Calliostoma katoi (Sakurai, 1994) (original combination)
• Tristichotrochus koma Shikama & Habe, 1965: synonym of Calliostoma koma (Shikama & Habe, 1965) (superseded combination)
• Tristichotrochus levibasis Kuroda & Habe, 1971: synonym of Calliostoma levibasis (Kuroda & Habe, 1971) (superseded combination)
• Tristichotrochus margaritissimus Habe & Okutani, 1968: synonym of Calliostoma margaritissimum (Habe & Okutani, 1968) (superseded combination)
• Tristichotrochus mikikoae Kosuge & Oh-Ishi, 1970: synonym of Calliostoma mikikoae (Kosuge & Oh-Ishi, 1970)
• Tristichotrochus nakamigawai Sakurai, 1994: synonym of Calliostoma nakamigawai (Sakurai, 1994)
• Tristichotrochus problematicus Kuroda & Habe, 1971: synonym of Calliostoma problematicum (Kuroda & Habe, 1971) (superseded combination)
• Tristichotrochus sakashitai Sakurai, 1994: synonym of Calliostoma sakashitai (Sakurai, 1994) (original combination)
• Tristichotrochus sugitanii Sakurai, 1994: synonym of Calliostoma sugitanii (Sakurai, 1994) (original combination)
• Tristichotrochus takaseanus Okutani, 1972: synonym of Calliostoma takaseanum (Okutani, 1972) (original combination)
• Tristichotrochus tsuchiyai Kuroda & Habe, 1971: synonym of Calliostoma tsuchiyai (Kuroda & Habe, 1971) (original combination)
• Tristichotrochus uranipponensis Okutani, 1969: synonym of Calliostoma uranipponense (Okutani, 1969) (original combination)

References

1. ^ MolluscaBase (2018). Tristichotrochus Ikebe, 1942. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=465610 on 28 December 2018

• Ikebe, N. (1942). Trochid Mollusca Calliostoma of Japan, fossil and recent. Japanese Journal of Geology and Geography. 18: 249–282.

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