A new chitinozoan species from the Middle Ordovician of Estonia

A new species Baltochitina delicata is formally defined. This rare species has been identified in the Aseri Regional Stage (Darriwilian) in North Estonian sections. The genus Baltochitina was known so far only by a single species B. nolvaki, which occurs in the Lasnamägi Regional Stage (Darriwilian) of Estonia. The restricted range of both species points to their stratigraphical utility and suggests that Baltochitina belongs to endemic Baltica fauna.