Belongs within: Heterobranchia.Contains: Triptychia, Albinaria, Clausiliinae, Alopiinae, Phaedusinae. The Clausilioidea are high-spired land snails with well-developed plicae. The clausilioids Published 23 February 2009 The Clausilioidea are a superfamily of Stylommatophora (land snails). In the system of Bouchet et al. (2005), four families are assigned to this group—Palaeostoidae, Filholiidae, Anadromidae and Clausiliidae. The first three of… Continue reading Clausilioidea


Belongs within: Euopisthobranchia. Bulla is a genus of relatively large bubble snails with a well-developed shell into which the animal is able to withdraw completely. Shells of the various species are largely very similar in appearance, leading to taxonomic confusion in the genus. Characters (from Malaquias & Reid 2008): Shell ovoid, solid, mottled in drab… Continue reading Bulla


Belongs within: Heterobranchia.Contains: Aplysiidae, Akeridae, Gymnosomata, Thecosomata, Runcinidae, Umbraculidae, Cylichnidae, Diaphanidae, Retusidae, Rhizoridae, Acteocina, Tornatina, Bulla, Atys, Haminoea, Philinidae, Aglajidae, Philinoglossidae, Scaphandridae. The Euopisthobranchia are a major clade of marine gastropods supported by molecular data, including the bubble shells, sea hares and pteropods. Subgroups include the Aplysiida, sea hares and related taxa, a group of soft-bodied marine… Continue reading Euopisthobranchia


Belongs within: Helicoidei.Contains: Helix. The Helicinae is a group of snails native to the western Palaearctic, though several species have become distributed around the world through human transportation. Perhaps the best known such species is the garden snail Cornu aspersum, a large species with a globose brown shell patterned with lighter speckles and spiral bands.… Continue reading Helicinae


Belongs within: Helicinae. Helix is a western Palaearctic genus including the edible snail H. pomatia and related species. <==Helix Linnaeus 1758 [=Pentataenia Schmidt 1855; Pentataeniae, Pentataeniidae, Pentataeniinae]BR05 |–*H. (Helix) pomatia Linnaeus 1758BR17 (see below for synonymy) |–H. (Aglaia) infumataC64 |–H. (Camoena) piliodon Benson 1860TC89 |–H. (Carocolla)S41d | |–‘Carocolla’ bidentataG40 | |–H. (C.) dealbata Broderip 1841B41c… Continue reading Helix

Categorised as Helicoidei


Belongs within: Heterobranchia.Contains: Arion. The Arionoidea are slugs and semislugs characterised by an aulacopod foot (surrounded by a supra-pedal groove) and odontognath (ribbed) jaw (Hausdorf 1998). A small shell is present in Binneya and Anostomopsis; other arionoids are shell-less. In members of the family Philomycidae, the mantle covers nearly the entire dorsum of the animal… Continue reading Arionoidea

Categorised as Arionoidea


Belongs within: Heterobranchia.Contains: Pristilomatidae, Oxychilidae, Gastrodontidae, Chronidae, Trochomorphidae, Euconulinae, Liardetiini, Parmacelloidea, Vitrinidae, Agriolimacidae, Limacinae, Zonites, Ventridens, Paravitrea, Glyphyalinia, Helicarionoidea. The Limacoidei, sometimes referred to as the ‘limacoid clade’ or Limacoidea sensu lato, are terrestrial gastropods characterised by a radula bearing elongate marginal teeth without entocones. This modification of the radula may represent an adaptation to… Continue reading Limacoidei


Belongs within: Pupilloidea. Fading radiation Published 29 October 2022 In studies of evolutionary processes, certain radiations of species have become particularly renowned: the finches of the Galapagos, the honeycreepers of Hawaii, the cichlids of the African Great Lakes. Occupying a justified position among these causes celebre are the Partula snails of the Pacific Islands. These… Continue reading Partula


Belongs within: Limacoidei. Glyphyalinia snails Published 29 May 2022 North America (as with pretty much everywhere in the world outside the coldest regions) is home to a wide diversity of small, terrestrial snails that tend to pass unnoticed. Among the more diverse of these is the zonitid genus Glyphyalinia. Glyphyalinia species are often found in… Continue reading Glyphyalinia


Belongs within: Heterobranchia. The Acochlidimorpha are a group of small, mostly aquatic slugs that usually bear a large visceral hump projecting freely from the headfoot. <==Acochlidimorpha (see below for synonymy) |–Acochlidioidea [Strubellioidea, Strubellioidei]BR17 | |–Pseudunela Salvini-Plawen 1973 [Pseudunelidae, Pseudunelloidea]BR05 | | `–*P. cornuta (Challis 1970) [=Microhedyle cornuta]BR17 | |–Aiteng Swennen & Buatip 2009 [Aitengidae]BR17 |… Continue reading Acochlidimorpha