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Finella
''Finella'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae.
This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, Dialidae, Obtortionidae, Finellidae and Diastomatidae Morphological and anatomical studies by Winston Ponder in 1994 established that the genera ''Finella'' and ''Scaliola'' didn't belong in the above mentioned families and he brought them in a new family Scaliolidae.〔Ponder W. F. "The anatomy and relationships of ''Finella'' and ''Scaliola'' (Caenogastropoda, Cerithoidea, Scaliolidae)". pp. 215-241. In: Morton B. (ed.) ''The Malacofauna of Hong Kong and Southern China III.'' Proceedings of the Third Inrternational Workshop on the Malacofauna of Hong KOng and Southern China; Hong Kong, 13 April - 1 May 1992 xxii + 504 p.; Hong Kong University Press, Hong Kong 〕 This was supported in 1982 by Healy through the study of the ultrastructure on the spermatozoa.〔Healy J. M. (1982). "Ultrastructure of paraspermatozoa, euspermatozoa and eusperm-like spermatozoa of ''Obtortio'' cf. ''fulva'' (Prosobranchia, Cerithiacea)". ''Helgölander wiss. Meeresunters'' 35: 485-500.〕
==Description==
The species in this genus contain a small, elongated, conical shell without siphonal canal. The axial to spiral sculpture varies between weak and strong.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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