New records of ostracods and ammonites from the Aalenian (mainly Concavum Zone) of the Zollernalb (Swabian Alb, SW Germany)

The lithostratigraphy and ammonite/ostracod biostratigraphy the accompanying fauna of several sections outcrops around Hohenzollern (Zollernalb, SW Germany), ranging from topmost Opalinuston Formation (uppermost Lower Aalenian) to basal Wedelsandstein (lowermost Bajocian) are described analyzed. study ostracods 41 samples Aalenian Bajocian Heiligenbach, Hausterberg Roschbach has yielded approximately 4,100 specimens. Significant changes in ostracod assemblage occur at base “Comptum” Subzone, Bradfordensis/Gigantea subzonal boundary, Bradfordensis/Concavum zonal boundary Aalenian/Bajocian (Concavum/Discites zones). A minor change occurs above Calceola-Bank within Concavum Zone. following new species described: Cytheropterina crassicostata sp. nov. , Eucytherura eberti foveolata In addition, 15 presumably briefly described; 10 ‘incertae sedis’ taxa figured, but left open nomenclature. ammonite faunas Inopernabank Konglomeratbank beds (Upper Aalenian, Bradfordensis Zone, Gigantea Subzone) as well Calceolabank Rostrote Kalkbank cavatum biohorizon) correlated with those other areas.