Foraminifera data on the stratigraphy of the Strandža facial type of Triassic (Strandža Mt., SE Bulgaria)

The paper describes the first foraminifera found in the Strandža type of Triassic in Southeast Bulgaria. The presence of the Meandrospira pusilla Interval-zone (Spathian) is indicated by its index species found in the Gramatikovo Formation consisting of calcite phyllites. The Turriglomina mesotriasica Interval-zone (Ladinian) is indicated in the Kondolovo Formarion near the village of Kondolovo where the index species is accompanied by Pachyphloides oberhouseri and Austrocolomia cf. marschalli. In the same locality several levels of recrystallized limestones belonging to the Lipačka Formation have been found to contain assemblages of Palaeomiliolina sp., Labyrinthina? sp., Oberhauserella praeladinica, Schmidita cf. inflata, of Endothyra cf. kuepperi and Agathommina austroalpina, and of Labyrinthina cf. falsomlrabilis and Aulotortus friedli, indicative of the Paraophthalmidium corpathicum Range-zone (Karnian). The Miliolipora cuvillieri Range-zone (Norian) has been proved by its index species in the topmost stratigraphic levels of the Lipačka Formation near the village of Kondolovo. In the vicinity of the village of Zabernovo the Norian foraminiferal assemblage includes Quenquiloculina cf. nucleiformis, Schmidita cf. hedbergelloides, Variostoma cf. coniforme, V. helictum and other species indicative of an open sea environment.