New Ostracodes from the Öjlemyr Chert (Late Ordovician) of Gotland and Northern Germany

Twelve new ostracod species and five new ostracod genera are described from Öjlemyr Flint glacial erratic boulders of Late Ordovician age from the Isles of Gotland (Baltic Sea) and Sylt (North Sea) as well as from western Niedersachsen (North Germany). These taxa include some micro-ostracodes with adults <0.5 mm: Laterophores ferrettii sp. n., Postceratia fossula sp. n., Sagittovum? glabrum sp. n., Sudon microporatus sp. n., Buckelopsis dyca gen. et sp. n., Epiclinia epiclinata gen. et sp. n., Immanisator punctatus gen. et sp. n., Longisyltherella erratica gen. et sp. n., Aviacypris planta sp. n., A. coartata sp. n., A. truncata sp. n., and Dornbuschia bospi sp. n. The early occurrence of a typical platycope with a limen, and of podocopes with duplicatures is noteworthy.