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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 ...
[Greece] - Set in the port town of Aulis, Greece immediately before the Greek expeditionary force set sails to attack Troy. Due to unfavorable weather conditions, king Agamemnon of Mycenae offers his daughter Iphigenia as a human sacrifice to the goddess Artemis. The film is based on the theatrical play Iphigenia in Aulis by Euripides. Les ...
An operculum is a somewhat similar but permanent anatomical feature that is found in other clades of gastropods. The operculum serves some of the same functions as an epiphragm. Sometimes it protects the snail against predation. It protects certain species of snail if they are eaten by birds (such as Japanese white-eye). The snail can remain ...
peplum film: My Son, the Hero: 1962 peplum film: Oedipus Rex: 1967 Rape of the Belt: 1964 The Return: 2024 The film is a retelling of Homer's Odyssey Sköna Helena: 1951 The Bacchantes: 1961 peplum film: The Fall of Troy: 1911 the first known adaptation of Homer's epic poem, the Iliad. The Fury of Achilles: 1962 peplum film: The Giants of ...
Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum. [2] The family Neritidae includes marine genera such as Nerita, marine and freshwater genera such as Neritina, and freshwater and brackish water genera such as Theodoxus.
Calliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the Calliostoma top snails. Previously this genus was placed within the family Trochidae. Calliostoma is the type genus of the family Calliostomatidae.
Bithynia is a genus of small freshwater snails with an operculum, aquatic prosobranch gastropod mollusks in the family Bithyniidae. [2] The diploid chromosome number of Bithynia sp. from Egypt is 2n=32. [3]
Cyclophoridae is a taxonomic family of small to large tropical land snails with an operculum, terrestrial gastropod mollusks in the order Architaenioglossa belonging to the subclass Caenogastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).