Trochiscus G. B. Sowerby I, 1838 (Invalid: junior homonym of Trochiscus Heyden, 1826 and Trochiscus Held, 1837; Norrisia is a replacement name)
Source
basis of record: Williams S.T., Karube S. & Ozawa T. (2008) Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined. Zoologica Scripta 37: 483–506. [details]
Citation: WoRMS (2013). Norrisia Bayle, 1880. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=413473 on 2013-06-18