Results 21 to 30 of about 929 (163)
Cocodrilos (Archosauria: Crocodylia) de la región neotropical
Biota Colombiana, 2000 Crocodylia [Gmelin, 1789], originalmente Crocodili, es un orden con distribución circuntropical, aunque algunas especies actualmente ocupan áreas cálidas de la zona temperada. Los cocodrilos vivientes tienen sus ancestros en los protosuchios del triásico
Miguel A. Rodríguez M.
doaj +10 more sources
The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida) [PDF]
Journal of Systematic Palaeontology, 2010 Crown group Archosauria, which includes birds, dinosaurs, crocodylomorphs, and several extinct Mesozoic groups, is a primary division of the vertebrate tree of life. However, the higher-level phylogenetic relationships within Archosauria are poorly resolved and controversial, despite years of study.
Brusatte, SL +3 more
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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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Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae). [PDF]
J AnatA three‐dimensional biomechanical model of the musculoskeletal system is used to analyse the potential locomotor functions of the small (~1 kg) Late Triassic archosaurian reptile Gracilisuchus stipanicicorum. The study finds that, potentially like the ancestral archosaur, this taxon was probably quadrupedal, plantigrade and neither strongly sprawling ...
Lecuona A +3 more
europepmc +2 more sources
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
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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
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Acta Herpetologica, 2020 Two groups of extant Archosauria, Crocodylia and Neornithes, have two-chambered stomachs and store gastroliths inside their “gizzards”. Morphological similarities of the “gizzards” lead some previous studies to assume that the presence of this structure,
Ryuji Takasaki, Yoshitsugu Kobayashi
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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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Palaeohistology and external microanatomy of rauisuchian osteoderms (Archosauria: Pseudosuchia) [PDF]
Palaeontology, 2011 Abstract: The presence of postcranial dermal armour is plesiomorphic for Archosauria. Here, we survey the external microanatomy and histology of postcranial osteoderms (i.e. dorsal paramedian and caudal osteoderms) of rauisuchians, a widely distributed assemblage of extinct predatory pseudosuchians from the Triassic.
Scheyer TM, Desojo JB
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The phylogenetic relationships of basal archosauromorphs, with an emphasis on the systematics of proterosuchian archosauriforms [PDF]
PeerJ, 2016 The early evolution of archosauromorphs during the Permo-Triassic constitutes an excellent empirical case study to shed light on evolutionary radiations in deep time and the timing and processes of recovery of terrestrial faunas after a mass extinction ...
Martín D. Ezcurra
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