Early Cretaceous Index Benthic Foraminifera from Northeast of Torbat-e-Heydarieh Area (Esfiyukh Section)

摘要

The first study of early cretaceous succession in Northeast of Torbat-e-Heydarieh, led to recognition of 30 genera and 25 species of benthic foraminifera such as Rectodictyorbitolina sp., Dictyoconus arabicus, Orbitolina discoidea,Palorbitolina lenticularis, Mesorbitolina parva, Orbitolina kurdica,Praeorbitolina sp., Valvullammina picardi, Pseudocyclamina lituus, Charentia cuvillieri, Lenticulina sp., Nezzazata picardi, Quinqueloculina robusta,Nautiloculina oolitica, Subaudia minuta, Praechrysalidina infracteracea, Rumanoloculina sp., Choffahella decipiens, Vercorsella arenata. Regard to Stratigraphy range of above mentioned, the Barremian–Aptian age suggested for this succession.