CONTENTS. 



PAGE 



Introduction 7 



The Upper Triassic Beds of the Borders of the Staked Plains 7 



The Literature of the Triassic Vertebrates of North America 12 



A New Genus of the Stegocephalia, Buettneria perfecta 13 



Description of Desmatosuchus spurensis and the New Suborder Desmatosuchia 26 



A New Parasuchian, Promystriosuchus ehlersi 49 



New Parasuchians, Leptosuchus crosbiensis and Leptosuchus imperfecta, from Crosby County, 



Texas 61 



Description of Isolated Bones of Parasuchians 70 



Description of the Remains of Dinosaurs 78 



Coprolites 83 



Incertae sedis .84 



