title: Zoogeography and ecology of the Middle Sarmatian Gastropods of the Eastern Paratethys
abstract: Results of ecological and zoogeographical study of the Middle Sarmatian gastropod molluscs of the Eastern Paratethys are presented. A comprehensive list of species and taxonomical remarks on some groups is provided. Some autecological characters of gastropods as well as the ratio of life forms with different diets are analyzed. The geographical areas of high abundance and maximal diversity of gastropods in the Eastern Paratethys correspond to the limits of bryozoan bioherms distribution; the lat