The pre-Mesozoic basement of the Eastern Pontides consists of a Permo–Carboniferous sedimentary sequence including the Çatalçeşme and Hardişi formations. The Çatalçeşme Formation has yielded rich assemblages of fusulinids, corals, gastropods, brachiopods, bryozoans, algae, conodonts and plants. | First report of a trilobite in the carboniferous of Eastern Pontides, NE Turkey