Systematics and palaeoecology of Late Aptian-Early Cenomanian Oysters (Families: Gryphaeidae, Ostreidae, Palaeolophidae) from northwest of Kerman (Kuhbanan region)

Document Type : مقالات پژوهشی

Authors

Leila Asghari

Mohammad Reza Vaziri

Ahmad Lotfabad Arab

10.22067/sed.facies.v5i2.11177

Abstract

For study of systematic and palaeoecology of Mid-Cretaceous Oysters, the Basab section, with 380 m thickness, west of Kuhbanan, northwest of Kerman, was measured and sampled. The section comprises a high diverse fauna (macro and microfossils), such as Echinoids, Bivalves, Oysters, Brachiopods, Gastropods, Corals, Ammonites, Foraminifers and Ostracods. The fossils indicate Late Aptian- Early Cenomanian age for the studied section. Eleven genera and species of Mid-Cretaceous Oysters are reported for the first time from the region. The fossils assemblages show a shallow and favorable condition during the deposition of the strata. The study of the Oysters indicates that the peak of abundance of the fossils correlates with high values of δ13C curve. This implies deposition of high amount of organic carbon, low oxygen condition, elimination of other taxa and opportunistic character of the Oysters.

Keywords

Systematic

palaeoecology

Late Aptian- Early Cenomanian

Oysters

Kerman

Iran

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