Bivalves from a Middle Jurassic submarine high (Bajocian, Som Hill, Bakony Mts, Hungary)

Szente, István (1995) Bivalves from a Middle Jurassic submarine high (Bajocian, Som Hill, Bakony Mts, Hungary). Hantkeniana, 1. pp. 59-66. ISSN 1219-3933

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Abstract

Marine bivalves from a fissure filling of Upper Bajocian (Middle Jurassic) age are briefly described and figured. Palaeoecological analysis of the Som Hill assemblageas well as the similarity of its taxonomic composition to those of other, coeval faunas preserved in fissure-fillings suggest that a distinct bivalve assemblage populated fissures of some Mediterranean seamounts during the Middle Jurassic. Both in diversity and density, bivalves are subordinate to gastropods in the Som Hill fauna. The bivalve fauna is dominated by the epibyssal forms and consists of representatives of extinct genera except Limopsis and Cuspidaria s. 1., which latter two are frequent in Recent deep-sea bivalve assemblages.

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