Campanian ammonites from the Upper Cretaceous Gober Chalk of Lamar County, Texas

The Roxton Limestone Member at the top of the Gober Chalk in northeast Texas yields a rich fauna, dominated byBaculites haresiReeside, 1927, andInoceramus balticusBoehm, 1909, with sparse occurrences ofPachydiscuscf.P. paulsoni(Young, 1963),Anapachydiscussp. juv.,Placenticeras placenta(DeKay, 1828),Hoplitoplacenticerasaff.H. plasticum(Paulcke, 1907),Menabites(Delawarella)delawarensis(Morton, 1830),M.(D.)danei(Young, 1963),M.(D.) aff.M.(D.)vanuxemi(Morton, 1830),Submortoniceras vandalinaenseYoung, 1963,Submortonicerassp.,Eubostrychocerassp., andScaphites hippocrepis(DeKay, 1828) III. The presence ofS. hippocrepisIII suggests a late early Campanian age assignment for the fauna. The assemblage includes species known from the Western Interior, Gulf Coast, Atlantic seaboard, and western Europe.