Palynostratigraphy of the Frasnian–Famennian boundary deposits from the Central Devonian Field, western Russia and comparisons with adjacent areas

Detailed palynological research carried out on samples from the three quarries at Khlevnoye and Kamenka (Voronezh region) permitted recognition of the Frasnian–Famennian boundary in the lower Kamenka quarry. Two miospore zones, Cristatisporites deliquescens–Verrucosisporites evlanensis (DE) from the Frasnian and Cyrtospora cristifera–Diaphanospora zadonica (CZ) from the Famennian, have been recognized. Some faunistic data were also obtained from the F–F boundary deposits. Research confirmed the existence of a sedimentological gap between the Livny and Zadonsk horizons, including all of the Volgograd horizon. These new palynological results are compared with data from adjacent areas: Pripyat Depression (Belarus), Timan-Pechora Province and the Volgograd Volga region (Russia), western Pomerania and the Holy Cross Mountains (Poland).