Belongs within: Borsoniidae. Zemacies: a toothless wonder Published 17 June 2016 What makes an organism a ‘living fossil’? The phrase is one that has been thrown about a bit over the years but whose actual definition can be ambiguous. Many people use it to refer to a species that is supposedly little changed from its… Continue reading Zemacies


Belongs within: Horaiclavidae. Marshallena is a genus of moderate- to large-sized conoids known from deep waters of the Indo-west Pacific (Powell 1966). Characters (from Powell 1966): Shell of moderate to large size, 14–78 mm, fusiform-biconic, with medially angulate to subangulate turreted whorls, sculptured with closely spaced regular, narrowly crested axial folds, crossed by dense spiral… Continue reading Marshallena


Belongs within: Pseudomelatomidae. Comitas is a genus of relatively large, tall-spired conoids with a sculpture of long fold-like axials and a leaf-shaped operculum (Powell 1966). Toxic sea snails Published 16 October 2007 The Turridae are a family of predatory gastropods, mostly fairly small though Comitas is one of the larger members, reaching up to 95… Continue reading Comitas

Gemmula (Gemmula)

Belongs within: Turridae. The type subgenus of the genus Gemmula is a group of relatively large, tall-spired conoids found in warmer waters (Powell 1966). Characters (from Powell 1966): Shell rather large, 24–88 mm, elongate-fusiform, with tall spiral and long straight unnotched anterior canal. Protoconch tall, conical, polygyrate, axially costate. Adult sculpture of spiral keels and… Continue reading Gemmula (Gemmula)

Categorised as Turridae


Belongs within: Pisaniidae. Cantharus is a genus of whelks with impressed sutures and angular whorls. The type species is the Tranquebar goblet C. tranquebaricus, native to the Indian Ocean and now established in the Mediterranea Sea. Cantharus Röding 1798BR05 [incl. Anna Risso 1826W94, Muricantharus Olsson & Strong 1971W94] |–*C. tranquebaricus (Gmelin 1791) [=Buccinum tranquebaricum; incl.… Continue reading Cantharus


Belongs within: Neogastropoda.Contains: Zeatrophon, Axymene, Terefundus, Poirieria, Typhinae, Muricopsis, Favartia, Murexiella, Coralliophilinae, Ocenebra, Nucella, Trophon, Rapaninae, Ergalataxinae, Dermomurex, Pteropurpura, Haustellum, Pterynotus, Murex, Chicoreus, Siratus. The Muricidae are a group of predatory marine gastropods that often possess strongly developed varices on the shell that may bear prominent spines, flanges or other ornaments. Members possess an accessory… Continue reading Muricidae

Categorised as Muricidae


Belongs within: Muricidae. Pterynotus is a genus of murexes with a trivaricate shell bearing more or less expanded varical flanges. In members of the subgenus Pterochelus, there is a channeled spine at the shoulder surrounded by the wing-like varix. <==Pterynotus Swainson 1833RA75 [=Pterymurex Rovereto 1899RA75; incl. Marchia Jousseaume 1880W94] | i. s.: P. barclayi Reeve… Continue reading Pterynotus

Categorised as Muricidae


Belongs within: Neogastropoda. The Harpidae, harp shells, are a group of predatory gastropods with usually colourfully patterned, polished shells bearing strong axial ribs. Characters (from Wilson & Gillett 1971): Shell usually shiny, strikingly coloured and patterned, sculptured with strong axial ribs more highly polished than remainder of shell. Anterior siphon canal a deep, wide notch;… Continue reading Harpidae

Categorised as Harpidae


Belongs within: Neogastropoda.Contains: Costellaria, Vexillum. The Costellariidae, ribbed mitres, are a group of predatory gastropods with shells resembling those of the mitres of the Mitridae but with strong axial sculpture. Most species lack an operculum though molecular data support inclusion of the operculate genera Latiromitra and Ceratoxancus as basal costellariids. The radula possesses unicuspid lateral… Continue reading Costellariidae


Belongs within: Mitroidea.Contains: Proximitra, Imbricariinae, Strigatella, Nebularia, Mitra. The Mitridae, mitres, are a group of predatory gastropods with a usually long and tapered shell, and a long extensible proboscis that is usually not retracted. As far as is known, all species are exclusive predators of sipunculan worms (Fedosov et al. 2015). Characters (from Wilson & Gillett 1971):… Continue reading Mitridae

Categorised as Mitroidea