Late Triassic (Carnian and Norian) Tetrapods from the Southwestern United States: Bulletin 4

aetosaur AMNH Angistorhinus Arizona armor articular surfaces astragalus Buettneria perfecta calcaneum centrum cervical vertebrae Chatterjee Chindesaurus Chinle Formation clavicle coracoid Creek Crosby County dentary Desmatosuchus Desmatosuchus haplocerus distal extremity DMNH Dockum Group dorsal centra dorsal vertebrae Early Norian equals 5 cm exhibiting femur Ghost Ranch holotype humerus Hunt and Lucas interclavicle ischium Late Carnian lateral plates lateral view length Leptosuchus Leptosuchus sp Locality NMMNH Longosuchus lower Petrified Forest margin medial metoposaur Mexico Middle Carnian MNA PI Murry neural spines NMMNH Otis Chalk Paleorhinus paramedian plate fragment Paratypothorax Petrified Forest Member phytosaur Placerias Placerias Quarry Poposaurus portion Postosuchus Postosuchus kirkpatricki PPHM WT proximal extremity Pseudopalatinae Pseudopalatus pubis rauisuchian ridge rugose Sandstone Scale equals scutes shaft skeleton skull specimens squamosal Stagonolepis Stagonolepis wellesi supratemporal fenestra Tecovas Formation Texas tibia TMM Locality transverse Triassic Trilophosaurus trochanter TTUP Typothorax Typothorax coccinarum UCMP UMMP upper Petrified Forest ventral surfaces ΜΝΑ ΡΙ