ABSTRACT
Articulated brachiopods are one of the most dominant members of the sessile benthos within the classic Ordovician successions of the East Baltic, which occur at both outcrop and in hundreds of core sections. Detailed data are available from a series of key sections on a north-south (onshore-offshore) transect across the northern and central parts of the East Baltic and are compared with data from neighbouring regions. The changes in the brachiopod fauna as a whole and fluctuations in the skeletal composition of the sediments reflect palaeoenvironments and changes in the Ordovician ecosystem in the Baltic region.
