Brachiopods from the upper Přídolí–lower Eifelian (uppermost Silurian–lowermost Middle Devonian) of the Rhenish Massif (Rheinisches Schiefergebirge, Germany) are taxonomically revised in a long-term project. Currently, nearly 270 species have been distinguished. Stratigraphic intervals with characteristic ecological-evolutionary faunas are separated by events caused by the interplay of changing subsidence, sedimentation and eustatic sea-level, in combination with possible climatic factors. A detailed biostratigraphy consisting of 24 spiriferids and 17 assemblage zones is proposed; these are currently further subdivided into subzones. The revised biostratigraphy provides the prerequisite for new studies on the palaeoenvironment and palaeobiogeography.
Silurian, Devonian, invertebrates, facies, palaeoenvironment