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Xylodiscula planata sp. nov., a "lower" heterobranch gastropod from Norwegian waters
Høisaeter, T.; Johanessen, P.J. (2001). Xylodiscula planata sp. nov., a "lower" heterobranch gastropod from Norwegian waters. Sarsia 86: 325-332
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827, more
Peer reviewed article  

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  • Høisaeter, T.
  • Johanessen, P.J.

Abstract
    A small gastropod, closely related to a couple of species known from moderately deep water in theMediterranean, is described as a new species based on nine specimens. The snails were found in fourgrab samples, one on a sandy-rocky bottom in outer Sognefjorden, two on silty-sandy bottom in outerHardangerfjorden, both from 34 m, and finally one from 54 m depth outside Sotra, W of Bergen. Thisis the first record of a member of the heterobranch family Xylodisculidae from Norwegian waters.The specimens were all found in the immediate vicinity of salmon farms, and a preference by thespecies for the reducing environment of decaying, surplus fish feed is suggested.

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