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.