Title: Ostracoda from wells in North Carolina, Part 1, Cenozoic Ostracoda
Abstract: Cenozoic Ostracoda obtained from wells and surface exposures in North Carolina are described.Eight of the species are new.This work provides our first knowledge of the pre-Miocene Cenozoic Ostracoda in North Carolina.The names of the surface 'Cenozoic formations are not applied to the subsurface units in this paper because of uncertainties in correlation; instead, the more general terms Paleocene (?), lower Eocene, middle Eocene, Oligocene or lower Miocene, lower Miocene, middle Miocene, upper Miocene, Pliocene, Pleistocene, and Recent are used.The Paleocene (?) rocks consist of fine-grained, sandy, glauconitic shale and marl, and contain tiny benthonic Foraminifera.The unit is 277 feet thick beneath Cape Hatteras and thins abruptly westward.Its tentative assignment to Paleocene is based on stratigraphic position and on the fact that it differs markedly in lithologic character and fauna from the adjoining units.The lower Eocene consists of as much as 485 feet of finegrained glauconitic sandstone and sandy limestone in which, from Cape Hatteras southwestward, many layers are highly siliceous.Brachycythere marylandica (Ulrich), Bythocypris parilis Ulrich, Cytherelloidea howei Swain, Haplocytheridea hopkinsi, (Howe and Garrett), Trachyle'beris?sp.aff.T.f cornmunis aquia, (Schmidt), and Xestoleberis cf.X. longissima Schmidt are ostracodes characteristic of the lower Eocene.The middle Eocene rocks are coarse-grained, glauconitic, sandy limestones and calcareous sandstones with a maximum total thickness of 647 feet.This zone contains abundant ostracodes of which many are indicative of Claiborne age.The species that are restricted to the unit are: Buntonia howei (Stephenson),