A biofacies of Woodbine age in the southeastern Gulf Coast region

Abstract

A unique microfauna occurs in subsurface Cretaceous rocks of Woodbine age in the southeastern Gulf Coast region.The fauna of Foraminifera and Ostracoda is a mixture of forms of Comanche age, long ranging forms of Gulf age and species restricted to the Woodbine and its subsurface equivalents.Twenty-three species of Foraminifera, four of which are new, are described and twenty species are figured.The common lithofacies and the microfaunal biofacies of the Woodbine formation of Texas and its subsurface correlatives in other parts of the Gulf Coast are discussed and the known areal distribution of the fauna is given.