Ostracodes from the non-marine sequence of Upper Jurassie (1) to Lower Cretaceous age in northeastern Brazil are described („NE-Brazilian Wealden", Bahia- and Postbahia-Series). New are 46 species of the Iollowing taxa: Cypridea, C. (Sebastianites), C. (Morininoides), Paracypridea, Hourcqia, Petrobrasia, Salvadoriella, Reconcavona, Looneyellopsis n. g., Limnocythere, and Theriosynoecum. The regional relations of some of the species point to Western Africa („West African Wealden” in Gabon, and Congo Coastal Basin), and, in the ease of one subspecies, to the „Wealden” of Lebanon. Such species are of importance for intercontinental correlations, for discussions of gondwanic land connections up to Cretaceous times, and for much-discussed questions of general paleontological interest. In contrast to previous work on ostracodes of the „NE-Brazilian Wealden”, information has now been considerably increased on the stratigraphically oldest ostracode faunas of the Bahia-Series (Aliança formation), and on the stratigraphically youngest faunas (Postbahia Series of essentially Aptian age). Formations of the „Postbahia-Series” play an important part not only in NE Brazil, but also in Western Africa („Cocobeach supérieur” in Gabon; Congo Coastal Basin, Angola?). Knowledge of the more exact stratigraphic age, subdivision, local and regional correlations of these formations is still rather poor. It is, therefore, highly desirable to know more about the generally rich ostracode faunes which are, besides the sporomorphae, usually the only fossils of stratigraphic value in these non-marine series.
America, South
Brazil
Biodiversity, Taxonomic and ecological diversity
Paleontology, Fossils, Paleobiology