The species Inoceramus frechi (Bivalvia, Cretaceous); its characteristics, formal status, and stratigraphical position

摘要: The palaeontological characteristics, formal Status and biostratigraphy of the Cretaceous inoceramid bivalveInoceramus frechi are discussed. species was described byFlegel (1905) on material from Friedrichsgrunder Lehne (Sudetes), a single specimen also mentioned Hokkenau (Polish: Czaple), Lowenberger Kreide (North Sudetic Trough) without any illustration or reference to an illustration. original is no longer preserved, description inadequate, new collections type locality, i.e. Lehne, do not allow concept be redefined. ofFlegel may indirectly inferred ofScupin (1912–13) Hockenau which compared by latter author with that locality byFlegel, commonly regarded as lectotype ofFlegel’s in subsequent literature. This part series ofInoceramus frechi Flegel thus has right its lectotype. For reasons nomenclatorial stability, however, it proposed here retain speciesI. Flegel, ofI. inScupin (1912–13: pl. 11, fig. 10) designated neotype species. topmost Turonian/?lowermost Coniacian Sonnenberg near Waltersdorf (Saxony, Germany) representingAndert’s (1911) separate referred toMytiloides scupini (Heinz).