Resumen de Late Paleocene ostracoda from Nigeria
Christopher A. Foster, F. M. Swain, S.W. Petters
Upper Paleocene benthonic ostracode assemblages represented by 56 species, two of which are new, are described from the Kalambaina Formation in north-western Nigeria and the Ewekoro Limestone and Imo Shale Formations in southern Nigeria. The ostracodes from the Kalambaina Formation are more Tethyan than those of southern Nigeria, but there are several species in common between both regions. Although this suggests faunal exchange between the Saharan interior sea and the Gulf of Guinea during the Paleocene, it is impossible to objectively assess ostracode migration routes at the moment since vast tracts of West African territory are awaiting detailed micropaleontological studies. That there are ostracode species not in common between northwestern and coastal Nigeria suggests species endemism and the existence of separate ostracode communities in each region.
The new species are Neonesidea ilaroides, n. sp., and N. elongatoilaroensis, n. sp.
