A high number of fossil fishes are known from this formation, the majority of which appear to have pelagic and deepwater affinities. These are mostly known from two localities near Elam and Istehbanat.[2] The age of these loccalities have been disputed, and have previously been considered to be Early Oligocene, but are now generally thought to be middle to late Eocene in age, most likely Priabonian.[3] Some fossils of migratory insects (a locust and ant alates) are also known from early Oligocene-aged strata in the locality of Babaheidar.[1]
^ abMuséum national d'histoire naturelle (France); naturelle (France), Muséum national d'histoire (1966). Notes et mémoires sur le Moyen-Orient. Vol. t.8 (1966). Paris: Muséum national d'histoire naturelle.