An enigmatic new archosauriform from the Carnian– Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina [PDF]
Acta Palaeontologica Polonica, 2021 In this contribution we introduce a new Late Triassic archosaur, Incertovenator longicollum gen. et sp. nov., with an unusual combination of character states that are present in certain early avemetatarsalian and pseudosuchian archosaur clades.
Imanol Yáñez +4 more
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Silesaurid (Archosauria: Dinosauriformes) remains from the base of the Dockum Group (Late Triassic: Otischalkian) of Texas provide new insights to the North American record of dinosauriforms. [PDF]
Anat Rec (Hoboken)Abstract Silesaurids (Archosauria: Dinosauriformes) are found in Middle to Upper Triassic deposits across Pangea, but few stratigraphic sections record the evolution of the group in one geographic area over millions of years. Here, we describe silesaurid remains from the oldest of the Upper Triassic stratigraphic sequence from the base of the Dockum ...
Tolchard FB, Perkins BW, Nesbitt SJ.
europepmc +2 more sources
The first ornithosuchid from Brazil and its macroevolutionary and phylogenetic implications for Late Triassic faunas in Gondwana [PDF]
Acta Palaeontologica Polonica, 2020 rnithosuchidae is one of the most enigmatic clades of Triassic pseudosuchians. The group is composed by three carnivorous species that were excavated from Upper Triassic beds of Scotland and Argentina.
Rodrigo T. Müller +3 more
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The craniomandibular anatomy of the early archosauriform Euparkeria capensis and the dawn of the archosaur skull [PDF]
Royal Society Open Science, 2020 Archosauria (birds, crocodilians and their extinct relatives) form a major part of terrestrial ecosystems today, with over 10 000 living species, and came to dominate the land for most of the Mesozoic (over 150 Myr) after radiating following the Permian ...
Roland B. Sookias +7 more
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Vertebral morphometrics and lung structure in non-avian dinosaurs [PDF]
Royal Society Open Science, 2018 The lung-air sac system of modern birds is unique among vertebrates. However, debate surrounds whether an avian-style lung is restricted to birds or first appeared in their dinosaurian ancestors, as common osteological correlates for the respiratory ...
Robert J. Brocklehurst +2 more
doaj +1 more source
Braincase anatomy of the Paleocene crocodyliform Rhabdognathus revealed through high resolution computed tomography [PDF]
PeerJ, 2021 Dyrosaurids were highly specialized, largely marine, relatives of living crocodylians, and one of the few archosaur lineages to survive the K-Pg extinction.
Arthur Erb, Alan H. Turner
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A new archosauriform (Reptilia: Diapsida) from the Manda beds (Middle Triassic) of southwestern Tanzania. [PDF]
PLoS ONE, 2013 BackgroundArchosauria and their closest relatives, the non-archosaurian archosauriforms, diversified in the Early and Middle Triassic, soon after the end-Permian extinction. This diversification is poorly documented in most Lower and Middle Triassic rock
Sterling J Nesbitt +2 more
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Anatomically grounded estimation of hindlimb muscle sizes in Archosauria
Journal of Anatomy, 2022 AbstractIn vertebrates, active movement is driven by muscle forces acting on bones, either directly or through tendinous insertions. There has been much debate over how muscle size and force are reflected by the muscular attachment areas (AAs). Here we investigate the relationship between the physiological cross‐sectional area (PCSA), a proxy for the ...
Andrew R. Cuff +5 more
openaire +2 more sources
Royal Society Open Science, 2022 The Manda Beds of southwest Tanzania have yielded key insights into the early evolutionary radiation of archosaurian reptiles. Many key archosaur specimens were collected from the Manda Beds in the 1930s and 1960s, but until recently, few of these had ...
Richard J. Butler +4 more
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Systematics of putative euparkeriids (Diapsida: Archosauriformes) from the Triassic of China [PDF]
PeerJ, 2014 The South African species Euparkeria capensis is of great importance for understanding the early radiation of archosauromorphs (including archosaurs) following the Permo–Triassic mass extinction, as most phylogenetic analyses place it as the sister taxon
Roland B. Sookias +3 more
doaj +2 more sources