Foraminifera and Ostracoda of the classic Callovian ammonite-rich bed of the Villány Mountains (Hungary)

Görög, Ágnes and Tóth, Emőke and Wernli, Roland (2012) Foraminifera and Ostracoda of the classic Callovian ammonite-rich bed of the Villány Mountains (Hungary). Hantkeniana, 7. pp. 95-123. ISSN 1219-3933

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Abstract

This work presents the isolated microfauna association from two facies of the Middle Jurassic, condensed, iron oolitic, ammonite-rich bed of the Villány Mountains, southern Hungary. This is the first record of the isolated benthic foraminifera and ostracoda of this typical Bathonian- Middle Oxfordian condensed facies. The microfauna has been extracted by acetolysis from hard, indurated limestone. Altogether 30 foraminifera and 4 ostracod taxa are described in detail. The planktonic association is unique in diversity and preservation from the Callovian. The composition of benthic foraminifera and ostracod assemblages differs from the previously published Callovian faunas. This is probably due to the peculiar environment, the stromatolitecovered pelagic swell what they inhabited.

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