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  2. Chinese mystery snail - Wikipedia

    en.wikipedia.org/wiki/Chinese_mystery_snail

    The Chinese mystery snail, black snail, or trapdoor snail (Cipangopaludina chinensis), is a large freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Viviparidae. [ 3 ] [ 4 ] The Japanese variety of this species is black and usually a dark green, moss-like alga covers the shell.

  3. List of non-marine molluscs of China - Wikipedia

    en.wikipedia.org/wiki/List_of_non-marine...

    An unidentified land snail from China. Cyclophoridae. Cyclophorus aquilus (Sowerby, 1843) [8] Cyclophorus clouthianus Möllendorff, 1882 [8] Cyclophorus dilatatus Heude, 1886 [8] Cyclophorus dodrans dodrans Mabille, 1887 [8] Cyclophorus fargesianus Heude, 1885 [8] Cyclophorus martensianus Möllendorff, 1874 [8] Cyclophorus pyrostoma ...

  4. Operculum (gastropod) - Wikipedia

    en.wikipedia.org/wiki/Operculum_(gastropod)

    Shell of marine snail Lunella torquata with the calcareous operculum in place Gastropod shell of the freshwater snail Viviparus contectus with corneous operculum in place. An operculum (Latin for 'cover, covering'; pl. opercula or operculums) is a corneous or calcareous anatomical structure like a trapdoor that exists in many (but not all) groups of sea snails and freshwater snails, and also ...

  5. Cyclocosmia ricketti - Wikipedia

    en.wikipedia.org/wiki/Cyclocosmia_ricketti

    Cyclocosmia ricketti (Chinese: 里氏盤腹蛛; pinyin: Lǐ shì pán fù zhū), commonly known as the Chinese hourglass spider (which generally refers to its genus), is a species of trapdoor spider of the genus Cyclocosmia, which refers specifically to mygalomorphus animals.

  6. Sinotaia quadrata - Wikipedia

    en.wikipedia.org/wiki/Sinotaia_quadrata

    The snails are then cleaned and cooked in a curry. They are also parboiled in salted water and eat together with green papaya salad. [4] S. quadrata is commonly sold in markets and restaurants in China [44] and constitutes one of the three predominant freshwater snails found in Chinese markets, [38] where it is considered a delicacy. [18]

  7. Gastropod shell - Wikipedia

    en.wikipedia.org/wiki/Gastropod_shell

    Operculum: the "trapdoor" of the shell; Parietal callus: a ridge on the inner lip of the aperture in certain gastropods; Periostracum: a thin layer of organic "skin" which forms the outer layer of the shell of many species; Peristome: the part of the shell that is right around the aperture, also known as the lip; Plait: folds on the columella.

  8. Reproductive system of gastropods - Wikipedia

    en.wikipedia.org/wiki/Reproductive_system_of...

    These land snails have opercula, which helps identify them as "winkles gone ashore", in other words, snails within the clade Littorinimorpha and the informal group Architaenioglossa. Members of the snail family Pulmonata , which includes carboniferous land sails and some freshwater snails of the order Basommatophora , are protandrous ...

  9. List of freshwater aquarium invertebrate species - Wikipedia

    en.wikipedia.org/wiki/List_of_freshwater...

    This is a list of invertebrates, animals without a backbone, that are commonly kept in freshwater aquaria by hobby aquarists.Numerous shrimp species of various kinds, crayfish, a number of freshwater snail species, and at least one freshwater clam species are found in freshwater aquaria or '0' salinity water body.

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