A new upper Cretaceous Rudistid from the Kemp Clay of Texas
Lloyd William Stephenson
Distribution in Mexico: Cook Mountain formation, U. S. G. S. station 13567, Doctor Coss, Zacate, Nuevo Leon, Mexico; U. S. G. S. station 13570, General Bravo, Carlos Cantu, Nuevo Leon, Mexico; U. S. G. S. station 13553, west of Rancho ...