New bioerosion traces in rhynchosaur bones from the Upper Triassic of Brazil and the oldest occurrence of the ichnogenera Osteocallis and Amphifaoichnus by LUCCA S. CUNHA, PAULA DENTZIEN-DIAS, HEITOR FRANCISCHINI

“…All the traces are assigned to the action of insects exploring the rhynchosaur carcass. Osteocallis and associated clusters of grooves are interpreted as feeding traces, but whether they represent necrophagic or osteophagic behavior is still uncertain. …”
Get full text

A New Rhynchosaur Taxon from the Popo Agie Formation, WY: Implications for a Northern Pangean Early-Late Triassic (Carnian) Fauna by Adam J. Fitch, Merle Haas, Wayne C’Hair, Eugene Ridgley, Ben Ridgley, Devin Oldman, Crystal Reynolds, David M. Lovelace

Subjects: Get full text

Eifelosaurus – The Lonely Lizard by Jens Koppka

“…We explore the research history, including geoconservation aspects, and summarize current knowledge of Eifelosaurus, the sole fossil of its kind, identified as an early rhynchosaur. We discuss the local geology, stratigraphy and paleontology of the Lower Triassic in the Eifel area, with emphasis on local palaeoenvironmental conditions during deposition of the Buntsandstein. …”
Get full text

Gnathovorax cabreirai: a new early dinosaur and the origin and initial radiation of predatory dinosaurs by Cristian Pacheco, Rodrigo T. Müller, Max Langer, Flávio A. Pretto, Leonardo Kerber, Sérgio Dias da Silva

“…The type specimen comprises a complete and well-preserved articulated skeleton, preserved in close association (side by side) with rhynchosaur and cynodont remains. Given its superb state of preservation and completeness, the new specimen sheds light into poorly understood aspects of the herrerasaurid anatomy, including endocranial soft tissues. …”
Get full text

Paleoenvironmental and Biotic Changes in the Late Triassic of Argentina: Testing Hypotheses of Abiotic Forcing at the Basin Scale by Adriana C. Mancuso, Randall B. Irmis, Randall B. Irmis, Tomás E. Pedernera, Leandro C. Gaetano, Leandro C. Gaetano, Cecilia A. Benavente, Cecilia A. Benavente, Benjamin T. Breeden III, Benjamin T. Breeden III

“…We find that although many patterns are best explained by sampling issues and taphonomy, pseudosuchian archosaur diversity and rhynchosaur relative abundance conform to predictions of paleoenvironmental forcing as the climate changed from warmer, drier conditions to more temperate humid conditions. …”
Get full text

The holotype of the basal archosauromorph Prolacerta broomi revisited by GABRIELA SOBRAL

“…First, it points to potential taxonomic inconsistency since the holotype does not form a monophyletic group with other Prolacerta broomi OTUs in any of the analyses and, second, it suggests a more basal position for the holotype than that recovered in some studies, more basal than rhynchosaurs and close to the origin of Crocopoda. Together, these findings indicate areas of future research interest in the study of early evolving archosauromorphs.…”
Get full text

The braincase of Mesosuchus browni (Reptilia, Archosauromorpha) with information on the inner ear and description of a pneumatic sinus by Gabriela Sobral, Johannes Müller

“…Mesosuchus is one of the earliest and basalmost rhynchosaurs, playing an important role not only for the understanding of the evolution of the group as a whole, but also of archosauromorphs in general. …”
Get full text

The phylogenetic relationships of basal archosauromorphs, with an emphasis on the systematics of proterosuchian archosauriforms by Martín D. Ezcurra

“…The enigmatic choristoderans are either found as the sister-taxa of all other lepidosauromorphs or archosauromorphs, but consistently placed within Sauria. Prolacertids, rhynchosaurs, allokotosaurians and tanystropheids are the major successive sister clades of Archosauriformes. …”
Get full text