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Trochidae, Skeneidae et Skeneopsidae (Mollusca, Prosobranchia) de la région de Roscoff: observations au microscope électronique à balayage = Trochidae, Skeneidae and Skeneopsidae (Mollusca, Prosobranchia) of the Roscoff region: observations with the scanning electron microscope
Rodriguez Babio, C.R.; Thiriot-Quiévreux, C. (1975). Trochidae, Skeneidae et Skeneopsidae (Mollusca, Prosobranchia) de la région de Roscoff: observations au microscope électronique à balayage = Trochidae, Skeneidae and Skeneopsidae (Mollusca, Prosobranchia) of the Roscoff region: observations with the scanning electron microscope. Cah. Biol. Mar. 16(4): 521-530 + 4 plates
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

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  • Rodriguez Babio, C.R.
  • Thiriot-Quiévreux, C.

Abstract
    The protoconchs and the first juvenile whorls of several prosobranch spp from the Roscoff area are observed by scanning electron microscopy: Trochidae, Calliostoma zizyphinum, Gibbula magus, G. cineraria, G. tumida, Cantharidus clelandi. Can. Exasperatus, Can. Montagui, Can. Striatus; Skeneidae, Skenea serpuloides, S. cutleriana, S. nitens; Skeneopsidae, Skeneopsis planorbis. All the studied Trochidae have a 1 whorl protoconch; the spire is rounded with an oval aperture and a fine ornamentation in G. magus and C. striatus. The presence of a more or less marked dorsal ombilic and of a beak on the aperture is characteristic of G. cineraria, G. tumida, G. clelandi, G. exasperatus and C. montagui. The protoconchs morphology of the 3 spp of Skenea is very close to the Trochidae and Rissoellidae protoconchs. All these spp have a non pelagic development or a very short one.

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