Neotrocholina Reichel, 1956 is one of the most
important benthic foraminifera in Early Cretaceous. Some of
the species of this genus are indexes in biostratigraphy especially for this interval (e.g., Neotrocholina friburgensis: Late
Barremian–Early Aptian; Neotrocholina aptiensis: Early
Aptian). In order to conduct accurate paleontological investigations, sampling from the carbonate units of the Tirgan
Formation in Kopet Dagh sedimentary basin is done.
According to the occurrence level in the studied stratigraphic
sections as well as biometric interpretations, two species of
this genus (N. friburgensis and Neotrocholina valdensis) are
pointed out.
