ABSTRACT
Bryozoans are common components of Cenozoic faunas in sediments of south Moravia, but bryozoandominant sediments are generally very rare. Bryozoandominated sediments are mostly sandstone to micro-conglomerate but only in few localities bryozoans created true limestone buildups. There are at least two different types of bryozoans buildups: the first formed in normal sea conditions usually during Early Miocene, the second type developed in brackish conditions during Late Miocene. The main difference between these two types of buildups is the diversity of bryozoan species. In the first usually more than 50 species of bryozoans can be distinguished, while the brackish bioherms are formed usually of one bryozoan species Cryptosula terebrata (Sinzov, 1892) and by serpulids.
