Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin

About this book

Archosaurs, an important reptile group that includes today's crocodiles and birds, arose during the Triassic in the aftermath of the greatest mass extinction of all time. In the last 20 years, our understanding of the early evolution of the group has improved substantially with the discovery of new fossils and species of early archosaurs and their closest relatives, a better understanding of the relationships of these animals, and new insights into their palaeobiology. In order to synthesize these new data, researchers of early archosaurs from around the world met at the first symposium of early archosaur evolution at the IV Congreso Latinoamericano de Paleontología de Vertebrados (September 2011) in San Juan, Argentina. This symposium facilitated collaboration and strove to paint a better understanding of these extraordinary animals. The resultant body of work is a state-of-the-art examination of early archosaur groups and their close relatives including historical, anatomical, biogeographical, evolutionary and palaeobiological data. This contribution furthers our knowledge of the anatomy, relationships, and palaeobiology of species-level taxa as well as more global patterns of archosaur evolution during the Triassic.

Contents

Participants from the First Symposium of Early Archosaur Evolution

NESBITT, S. J., DESOJO, J. B. & IRMIS, R. B. Anatomy, phylogeny and palaeobiology of early archosaurs and their kin

EZCURRA, M. D., BUTLER, R. J. & GOWER, D. J. ‘Proterosuchia’: the origin and early history of Archosauriformes

SOOKIAS, R. B. & BUTLER, R. J. Euparkeriidae

SUES, H.-D., DESOJO, J. B. & EZCURRA, M. D. Doswelliidae: a clade of unusual armoured archosauriforms from the Middle and Late Triassic

TROTTEYN, M. J., ARCUCCI, A. B. & RAUGUST, T. Proterochampsia: an endemic archosauriform clade from South America

STOCKER, M. R. & BUTLER, R. J. Phytosauria

DALLA VECCHIA, F.M. Triassic pterosaurs

LANGER, M. C., NESBITT, S. J., BITTENCOURT, J. S. & IRMIS, R. B. Non-dinosaurian Dinosauromorpha

VON BACZKO, M. B. & EZCURRA, M. D. Ornithosuchidae: a group of Triassic archosaurs with a unique ankle joint

DESOJO, J. B., HECKERT, A. B., MARTZ, J. W., PARKER, W. G., SCHOCH, R. R., SMALL, B. J. & SULEJ, T. Aetosauria: a clade of armoured pseudosuchians from the Upper Triassic continental beds

NESBITT, S. J., BRUSATTE, S. L., DESOJO, J. B., LIPARINI, A., DE FRANça, M. A. G., WEINBAUM, J. C. & GOWER, D. J. auisuchia

IRMIS, R. B., NESBITT, S. J. & SUES, H.-D. Early Crocodylomorpha

RAUGUST, T., LACERDA, M. & SCHULTZ, C. L. The first occurrence of Chanaresuchus bonapartei Romer 1971 (Archosauriformes, Proterochampsia) of the Middle Triassic of Brazil from the Santacruzodon Assemblage Zone, Santa Maria Formation (Paraná Basin)

NIEDŹWIEDZKI, G., BRUSATTE, S. L. & BUTLER, R. J. Prorotodactylus and Rotodactylus tracks: an ichnological record of dinosauromorphs from the Early–Middle Triassic of Poland

LANGER, M. C. & FERIGOLO, J. The Late Triassic dinosauromorph Sacisaurus agudoensis (Caturrita Formation; Rio Grande do Sul, Brazil): anatomy and affinities

SMALL, B. J. & MARTZ, J. W. A new aetosaur from the Upper Triassic Chinle Formation of the Eagle Basin, Colorado, USA

TABORDA, J. R. A., CERDA, I. A. & DESOJO, J. B. Growth curve of Aetosauroides scagliai Casamiquela 1960 (Pseudosuchia: Aetosauria) inferred from osteoderm histology

MASTRANTONIO, B. M., SCHULTZ, C. L., DESOJO, J. B. & GARCIA, J. B. The braincase of Prestosuchus chiniquensis (Archosauria: Suchia)

LIPARINI, A. & SCHULTZ, C. L. A reconstruction of the thigh musculature of the extinct pseudosuchian Prestosuchus chiniquensis from the Dinodontosaurus Assemblage Zone (Middle Triassic Epoch), Santa Maria 1 Sequence, southern Brazil

DE FRANçA, M. A. G., LANGER, M. C. & FERIGOLO, J. The skull anatomy of Decuriasuchus quartacolonia (Pseudosuchia: Suchia: Loricata) from the middle Triassic of Brazil

PARKER, W. G. & NESBITT, S. J. Cranial remains of Poposaurus gracilis (Pseudosuchia: Poposauroidea) from the Upper Triassic, the distribution of the taxon, and its implications for poposauroid evolution

WEINBAUM, J. C. Postcranial skeleton of Postosuchus kirkpatricki (Archosauria: Paracrocodylomorpha), from the Upper Triassic of the United States

HOLLIDAY, C. M. & NESBITT, S. J. Morphology and diversity of the mandibular symphysis of archosauriforms

TURNER, A. H. & NESBITT, S. J. Body size evolution during the Triassic archosauriform radiation

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