Results 1 to 10 of about 916 (163)

The relationships of the Euparkeriidae and the rise of Archosauria [PDF]

open access: yesRoyal Society Open Science, 2016
For the first time, a phylogenetic analysis including all putative euparkeriid taxa is conducted, using a large data matrix analysed with maximum parsimony and Bayesian analysis. Using parsimony, the putative euparkeriid Dorosuchus neoetus from Russia is
Roland B Sookias
exaly   +5 more sources

Deep reptilian evolutionary roots of a major avian respiratory adaptation [PDF]

open access: yesCommunications Biology, 2023
A newly discovered osteological correlate for structures associated with ventilatory muscle attachment indicates a deep evolutionary history of respiratory innovation within Archosauria.
Yan-yin Wang   +2 more
doaj   +2 more sources

Quantitative biomechanical assessment of locomotor capabilities of the stem archosaur Euparkeria capensis [PDF]

open access: yesRoyal Society Open Science, 2023
Birds and crocodylians are the only remaining members of Archosauria (ruling reptiles) and they exhibit major differences in posture and gait, which are polar opposites in terms of locomotor strategies.
Oliver E. Demuth   +2 more
doaj   +2 more sources

The evolution and role of the hyposphene-hypantrum articulation in Archosauria: phylogeny, size and/or mechanics? [PDF]

open access: yesRoyal Society Open Science, 2019
Living members of Archosauria, the reptile clade containing Crocodylia and Aves, have a wide range of skeletal morphologies, ecologies and body size.
Candice M Stefanic, Sterling J Nesbitt
exaly   +2 more sources

Characterization of Two Transposable Elements and an Ultra-Conserved Element Isolated in the Genome of Zootoca vivipara (Squamata, Lacertidae) [PDF]

open access: yesLife, 2023
Transposable elements (TEs) constitute a considerable fraction of eukaryote genomes representing a major source of genetic variability. We describe two DNA sequences isolated in the lizard Zootoca vivipara, here named Zv516 and Zv817.
Marcello Mezzasalma   +7 more
doaj   +2 more sources

Pulmonary anatomy in the Nile crocodile and the evolution of unidirectional airflow in Archosauria [PDF]

open access: yesPeerJ, 2013
The lungs of birds have long been known to move air in only one direction during both inspiration and expiration through most of the tubular gas-exchanging bronchi (parabronchi).
Emma R. Schachner   +2 more
doaj   +4 more sources

Osteology of the Late Triassic aetosaur Scutarx deltatylus (Archosauria: Pseudosuchia) [PDF]

open access: yesPeerJ, 2016
Aetosaurians are some of the most common fossils collected from the Upper Triassic Chinle Formation of Arizona, especially at the Petrified Forest National Park (PEFO). Aetosaurians collected from lower levels of the park include Desmatosuchus spurensis,
William G. Parker
doaj   +4 more sources

Ontogeny of the Middle-Ear Air-Sinus System in Alligator mississippiensis (Archosauria: Crocodylia). [PDF]

open access: yesPLoS ONE, 2015
Modern crocodylians, including Alligator mississippiensis, have a greatly elaborated system of pneumatic sinuses invading the cranium. These sinuses invade nearly all the bones of the chondrocranium and several bony elements of the splanchnocranium, but ...
David L Dufeau, Lawrence M Witmer
doaj   +4 more sources

Biomechanical analysis and new trophic hypothesis for Riojasuchus tenuisceps, a bizarre-snouted Late Triassic pseudosuchian from Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2023
Ornithosuchids are a Late Triassic pseudosuchian archosaur group, consisting of four species (three from South America, and one from Scotland). All of them have triangular skulls with a protruding premaxilla, large nostrils, an extensive diastema in ...
JEREMÍAS R.A. TABORDA   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy