URL: Lithostratigraphy and conodont biostratigraphy across the Lower-Middle Ordovician disconformity (early to middle Whiterockian) at Pratt Ferry, central AlabamaAuthor Names: Shaw, T. H.Roberson, K. EHarris, A. G.Era/Period/Epoch: Middle OrdovicianDocument type: AbstractPublication Type: BulletinPublication Title: U.S. Geological SurveyBulletin Number:: 1895-CPage Numbers:: C1-C13Year/month of publication: 1990-05
