Two specimens, recently thought to have been incorrectly referred to Erythrosuchus africanus, are shown without doubt to belong to this taxon. Apr 16, 2020. Apr 16, 2020. The fimt detailed description of the braincase of the Triassic early archosaurian reptile Elythrosuchus is presented. Abstract. This great group of animals includes dinosaurs, birds, crocodiles, pterosaurs (flying reptiles) and many other groups of creatures. Archosauria, the archosaur clade, is a crown group that includes the most recent common ancestor of living birds and crocodilians. As a result, relatively little is known about the timing, tempo, and major evolutionary patterns of the … CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The morphology of the erythrosuchid ankle joint is reassessed. Abstract. 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. However, it conflicts with recently published hypotheses in a number of details, most notably in the presence of a holophyletic Proterosuchia and a well-supported clade of Erythrosuchus + Shansisuchus. The fimt detailed description of the braincase of the Triassic early archosaurian reptile Elythrosuchus is presented. Reply. ecology is important for advancing understanding of the origin and early radiation of Archosaur- iformes and the patterns of biotic recovery following the Permo-Triassic mass extinction event. This symposium facilitated collaboration and strove to paint a better understanding of these extraordinary animals. Understanding of this radiation is currently limited by the poor early fossil record of the group in terms of sk eletal remains.
However, the earliest phase of archosaur history during the Early and early Middle Triassic is poorly understood, largely because of a paucity of fossils. The earliest diverse archosaur faunal assemblages are known from the Middle Triassic (c. 244 Ma), implying that the archosaur radiation began in the Early Triassic (252.3–247.2 Ma). The earliest diverse archosaur faunal assemblages are known from the Middle Triassic (c. 244 Ma), implying that the archosaur radiation began in the Early Triassic (252.3–247.2 Ma). Two specimens, recently thought to have been incorrectly referred to Erythrosuchus africanus, are shown without doubt to belong to this taxon.Furthermore, the morphology is essentially similar to that of other early …
The first endocranial casts from non-crown-group archosaurian reptiles are described. A small, proximally opening foramen is present on the anteromedial edge of the femoral shaft, ventral to the medial extension of the head and opposite the M. iliofemoralis scar. They come in some many shapes and sizes. Awesome work! Full text of "The Proterosuchia and the early evolution of the archosaurs; an essay about the origin of a major taxon" See other formats Archosaurs have a nearly 250 million year record that originated shortly after the Permian-Triassic extinction event and is continued today by two extant clades, the crocodylians and the avians. (2009). A similar scar is present in the early archosauriform Erythrosuchus africanus (Gower, 2003) and early archosaurs (e.g., ‘Mandasuchus’ NHMUK R6792; Charig, 1972).
Early Mesozoic archosaur phylogenetics ... Possible postcranial pneumaticity in the last common ancestor of birds and crocodilians: evidence from Erythrosuchus and other Mesozoic archosaurs. The archosaur species Teleocrater rhadinus, part of the new clade Aphanosauria, is an example of the earliest divergence of the avian stem lineage (Avemetatarsalia), the … The two extant lineages exemplify two bauplan extremes among a diverse and complex evolutionary history, but little is known about the common ancestor of these lineages. The most parsimonious tree based only on braincase data agrees broadly with existing ideas of early archosaur relationships. However, it conflicts with recently published hypotheses in a number of details, most notably in the presence of a holophyletic Proterosuchia and a well-supported clade of Erythrosuchus + Shansisuchus.