Small foraminifers from the Middle and Upper Eocene in the Burgas District. Calcareous benthic foraminifers. Part II

Abstract

This is the second paper of a series dedicated to the Eocene small foraminifera from the Burgas region (East Bulgaria). Published herein are descriptions of 23 species of calcareous foraminifers from the families of Cymbaloporidae, Asterigerinidae, Nonionidae, Chilostomellidae, Alabaminidae, Oridorsalidae, Heterolepidae, Gavelinellidae, Rotaliidae, Elphidiidae. Ten of the taxa found are new for Bulgaria. Indicated here is their distribution in the beds of the Ravnec and Mugris Formations from 19 borehole sections.