ARMIN ÖPIK 100; pp. 139–140

VOLKHOV STAGE IN NORTH ESTONIA AND SEA LEVEL CHANGES; pp. 141–157

OANDU STAGE (CARADOC) IN CENTRAL NORTH ESTONIA; pp. 158–172

TRILOBITES OF THE GENUS TOXOCHASMOPS FROM THE ORDOVICIAN OF ESTONIA; pp. 173–194

THE ORDOVICIAN CLITAMBONITIDINE BRACHIOPOD GENUS VELLAMO IN ESTONIA; pp. 195–216