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Molluschi bentonici in sedimenti recenti batiali e abissali dello Jonio
Di Geronimo, I. (1974). Molluschi bentonici in sedimenti recenti batiali e abissali dello Jonio. Conchiglie 10(7-8): 133-172
In: Conchiglie. Notiziario mensile della Unione Malacologica Italiana, aderente alla Unitas Malacologica Europaea. Unione Malacologica Italiana: Milano. ISSN 0588-9758, more

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  • Di Geronimo, I.

Abstract
    The benthonic Mollusca dredged in 1969 by the o/v Ruth Ann, in 1959 by the Titano and in 1967 by the mine-sweepers Bambù and Mango, all in the Ionian Sea, have been studied with the following results: Two assemblages were observed in the bathial and abyssal, mainly muddy depths, of the Taranto Gulf and of the Ionian abyssal plain: the first one containing Abra longicallis and the second one Cithna tenella. The first assemblage is subdivided in two facies: from 160 to 200 m depth, with Nucula sulcata; from 450 to 1,500 m with Dentalium agile and Nucula tenuis aegensis. Cithna tenella's assemblage was subdivided in a superficial facies from 2,000 to 2,400 m, still belonging to the bathyal plain and characterized by Yoldiella tenuis and in a deeper, probably abyssal facies with Cyclostrema solutum. The following new species have been described from the last assemblage: Cyclostrema solutum, Cocculina mamilla, Diaphana jonica, Cuspidaria elliptica and Halicardia ferruginea. Leptaxinus subovatus and Policordia gemma have been recorded for the first time in the Mediterranean. The Author suggest the presence of a Mediterranean abyssal fauna differing from the others known up to now.

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