Mikrofossilien aus dem Silur Estlands und der Insel Ösel

The present report deals with microfossils mostly of organic matter from the Silurian of Estonia and the Isle of Ösel. There are several groups met with: Chitinozoa, the most frequent ones, Foraminifera, Melanoskleritoidea, Annelida, Hystrichophyta and Algae. Other groups are only briefly mentioned.The annelids have yielded some new forms of mandibles and carriers; the maxillae are not dealt with here. In stratigraphical view there is a good correspondence with the equivalent strata of Gotland and for the higher zones of Ösel with the Beyrichian limestone, a well known and fossiliferous kind of glacial boulders of Downtonian age.