Belongs within: Trochidae. The Trochinae are a group of marine gastropods with conical or turbiniform, nodose shells with a quadrangular aperture with strongly discordant lips. Their fossil record extends from the Upper Cretaceous to the present. In the Miocene to recent genus Trochus, the shell is conical and has a more or less flattened base.… Continue reading Trochinae


Belongs within: Vetigastropoda.Contains: Bolma (Bolma), Turbo (Marmarostoma). The Turbininae are marine gastropods with strong, solid shells bearing a calcareous operculum; whorls may be rounded or more or less carinate. Members of the genus Turbo have shells with rounded whorls, a convex base, rounded aperture and near-circular, outwardly convex operculum (Knight et al. 1960). A group… Continue reading Turbininae


Belongs within: Vetigastropoda. Haliotis, the abalones, is a cosmopolitan genus of marine gastropods with an ear-shaped shell bearing a spiral series of openings allowing exhalation of water. A number of species are highly prized by humans as food and have been intensively harvested around the world. The paua H. iris of New Zealand is also… Continue reading Haliotis


Belongs within: Vetigastropoda.Contains: Diodora, Fissurella, Puncturella, Tugali, Emarginula. The Fissurellidae, keyhole and slit limpets, are a group of limpet-like gastropods in which the shell bears a slit or perforation for the exhalant current from the gills. Members of the Diodorinae and Fissurellinae have an apical aperture on the shell bordered by a callus whereas Hemitoma… Continue reading Fissurellidae


Belongs within: Vetigastropoda.Contains: Cantharidus, Gibbula, Micrelenchus, Fossarina, Monodonta, Diloma, Umboniinae, Halistylinae, Trochinae, Stomatellinae. Zediloma is a New Zealand genus of trochids with a subglobose to conical, spirally sculpted shell. <==Trochidae [Trochinia]BR05 |–+–UmboniinaeH96 | `–HalistylinaeH96 `–+–TrochinaeH96 `–StomatellinaeH96Trochidae incertae sedis: Cirsostylus Cossmann 1918TE01, KC60 `–*C. glandulus (Laube 1868) [=Trochus glandulus]TE01 Kittlitrochus Cossmann 1909 [=Paratrochus Kittl 1899 non… Continue reading Trochidae


Belongs within: Trochidae. Micrelenchus is an Australasian genus of small top shells with a relatively low spire and the columellar fold evanescent or not apparent (Knight et al. 1960). <==Micrelenchus Finlay 1926DK08 | i. s.: M. dilatatus (Sowerby 1870)P61 (see below for synonymy) | M. huttoni (Smith 1876)P61 [=Cantharidus tenebrosus huttoniF27, M. tenebrosus huttoniF27] |… Continue reading Micrelenchus


Belongs within: Trochidae. Cantharidus is a western Pacific genus of trochids with a smooth, sharp-spired shell known from the Miocene to the present (Knight et al. 1960). Characters (from Knight et al. 1960): Spire tapering, surface nearly smooth; columellar fold and tooth weak or absent. <==Cantharidus Montfort 1810BR05 (see below for synonymy) |–C. (Cantharidus)P61 |… Continue reading Cantharidus


Belongs within: Vetigastropoda. Margarella is a genus of small marine gastropods with a thin, globose, nearly smooth shell found around New Zealand and Antarctica (Knight et al. 1960). <==Margarella Thiele 1893P61 [=Margaritella Thiele in Troschel 1891 non Meek & Hayden 1860KC60; Margarellinae] | i. s.: M. antipoda (Hombron & Jaquinot 1854)P61 [incl. Chrysostoma roseaF27] |… Continue reading Margarella


Belongs within: Vetigastropoda.Contains: Brookula (Brookula). The Skeneidae are a group of small marine gastropods with a porcelaneous, usually widely umbilicate shell (Knight et al. 1960). <==Skeneidae [Delphinoideinae, Skeneadae, Skeneinae] |–Morchia Adams 1860F27a |–Dikoleps Höisaeter 1968H92 |–Tharsiella Bush 1897 [=Porcupinia Cossmann 1900 non Haeckel 1887, Porcupina (l. c.), Tharsis Jeffreys 1883]KC60 | `–*T. romettensis (Seguenza ex… Continue reading Skeneidae


Belongs within: Vetigastropoda. The Colloniinae are a group of small gastropods characterised by a periumbilical cord (Monari et al. 1996). What we have here is a failure to communicate Published 19 October 2021 To those without much of a background in taxonomy, the various rules governing the naming of organisms can seen frustratingly byzantine and… Continue reading Colloniinae