Middle Ordovician ostracodes from Sweden

From two samples of the Upper Dalby Limestone of Dalarna and Västergötland the ostracode faunas gained by Wetzel's (hydrofluoric acid) method are mentioned and 4 new species of the genera Henningsmoenia, Vittella, Hemeaschmidtella and Jaanussonia are described. The ostracode fauna confirms the age determination of corresponding erratic boulders (Backsteinkalk, 1B2-type) of Northern Germany.