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The Systellommatophora (synonym Gymnomorpha) is a clade of primitive, air-breathing slugs, according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005). [1] They are marine and terrestrial pulmonate gastropods within the Heterobranchia. There are two superfamilies in this clade.
Stylommatophora is an order [3] of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs . Stylommatophorans lack an operculum , but some close their shell apertures with temporary "operculum" ( epiphragm ) made of calcified mucus.
Ghost slug A live Selenochlamys ysbryda, head towards lower left Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Stylommatophora Family: Oxychilidae Genus: Selenochlamys Species: S. ysbryda Binomial name Selenochlamys ysbryda Rowson & Symondson, 2008 Selenochlamys ysbryda, the ghost slug, is a species of predatory air-breathing land slug ...
Stylommatophora is the most diverse group of land snails and slugs. Pallial cavity forms a spacious, air-filled lung. Anus is located on the right side close to the pneumostome. Operculum is missing. Two pairs of tentacle are retractable and the posterior pair bears eyes on the tips. Radula typically has many small, quite uniform teeth per row.
Arion fasciatus is in many ways similar to most other stylommatophoran slugs. They are hermaphroditic.They have a head, mantle, and foot.There are two sets of retractable tentacles on their heads: the upper pair have light-sensing organs, and the lower two are used to smell.
It is an opening in the right side of the mantle of a stylommatophoran snail or slug. Air enters through the pneumostome into the animal's single lung , the air-filled mantle cavity. [ 1 ] Inside the mantle cavity the animal has a highly vascularized area of tissue that functions as a lung.
Stylommatophora: Family: Philomycidae: Genus: Philomycus Rafinesque, 1820: Philomycus is a genus of air-breathing land slugs in the family Philomycidae, the ...
Arion fuscus, also known as the "dusky arion", is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs. Arion subfuscus (Draparnaud, 1805) is considered by some authors to be a partial synonym for Arion fuscus .