A new late Capitanian (Middle Permian) foraminiferal genus (Neodiscidae) from the Elmadağ Olistostrome, Central Anatolia (Ankara, Türkiye)

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The upper Cretaceous Elmadağ Olistostrome is characterized by foreland flysch deposits of the Intra–Pontide Ocean, which include numerous blocks of various sizes, types (platform-type carbonate, pelagic-type carbonate and chert) and belong to different periods/series (Carboniferous, Permian and Jurassic–Cretaceous). In this study, a fossiliferous carbonate block, collected from the Elmadağ Olistostrome, was studied for its foraminiferal assemblages. Besides a diverse late Capitanian foraminiferal assemblage, a new genus, Praeglobidiscus, is defined and proposed as a possible ancestor of the genus Globidiscus. These two genera are morphologically similar, but the sharp triangular protrusions in the last whorls of Praeglobidiscus is one-sided, whereas it is two-sided in Globidiscus.