Results 21 to 30 of about 290 (106)

Neural and endocranial anatomy of Triassic phytosaurian reptiles and convergence with fossil and modern crocodylians. [PDF]

open access: yesPeerJ, 2016
Phytosaurs are a clade of large, carnivorous pseudosuchian archosaurs from the Late Triassic with a near cosmopolitan distribution. Their superficial resemblance to longirostrine (long-snouted) crocodylians, such as gharials, has often been used in the ...
Lautenschlager S, Butler RJ.
europepmc   +8 more sources

Flying ticks: anciently evolved associations that constitute a risk of infectious disease spread. [PDF]

open access: yesParasit Vectors, 2015
Ticks are important vectors of emerging zoonotic diseases affecting human and animal health worldwide. Ticks are often found on wild birds, which have been long recognized as a potential risk factor for dissemination of ticks and tick-borne pathogens ...
de la Fuente J   +3 more
europepmc   +4 more sources

Variation in the pelvic and pectoral girdles of Australian Oligo-Miocene mekosuchine crocodiles with implications for locomotion and habitus. [PDF]

open access: yesPeerJ, 2017
Australian Oligo–Miocene mekosuchines (Crocodylia; Crocodyloidea) display wide diversity in cranial shape and inferred hunting strategies. Terrestrial habitus has been inferred for these distinctive predators. A direct morphological signal for locomotion
Stein MD, Yates A, Hand SJ, Archer M.
europepmc   +4 more sources

Empirical and Bayesian approaches to fossil-only divergence times: A study across three reptile clades. [PDF]

open access: yesPLoS One, 2017
Estimating divergence times on phylogenies is critical in paleontological and neontological studies. Chronostratigraphically-constrained fossils are the only direct evidence of absolute timing of species divergence.
Turner AH, Pritchard AC, Matzke NJ.
europepmc   +3 more sources

Locomotor and postural diversity among reptiles viewed through the prism of femoral microanatomy: Palaeobiological implications for some Permian and Mesozoic taxa. [PDF]

open access: yesJ Anat, 2023
Reptiles show great diversity of locomotion and posture. We employed phylogenetically informed statistical methods to explore their bone microanatomy. We used our models to infer the locomotion of extinct reptiles that document the different episodes of postural diversification in this clade.
Gônet J   +4 more
europepmc   +2 more sources

Climate drivers and palaeobiogeography of lagerpetids and early pterosaurs. [PDF]

open access: yesNat Ecol Evol
The origin of pterosaurs, the first vertebrates to achieve powered flight, is poorly understood, owing to the temporal and morphological gaps that separate them from their closest non-flying relatives, the lagerpetids.
Foffa D   +14 more
europepmc   +3 more sources

The pseudosuchian record in paleohistology: A small review. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Archosauria originated around the Earth's largest biotic crisis that severely affected all ecosystems globally, the Permotriassic Mass extinction event, and comprises two crown‐group lineages: the bird‐lineage and the crocodylian lineage. The bird lineage includes the iconic pterosaurs, as well as dinosaurs and birds, whereas the crocodylian ...
Scheyer TM.
europepmc   +2 more sources

Evolution of posture in amniotes–Diving into the trabecular architecture of the femoral head [PDF]

open access: yesJournal of Evolutionary Biology, Volume 36, Issue 8, Page 1150-1165, August 2023., 2023
We use 3D microanatomical parameters measured at the femoral head to study femoral posture in amniotes. We show that these parameters are not good indicators of femoral posture. Methods of ancestral state reconstruction hold great promise for improving our understanding of the evolution of posture in amniotes.
Gônet, Jordan   +2 more
core   +3 more sources

Biomechanical modeling of musculoskeletal function related to the terrestrial locomotion of Riojasuchus tenuisceps (Archosauria: Ornithosuchidae). [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Riojasuchus tenuisceps was a pseudosuchian archosaur from the Late Triassic period in Argentina. Like other ornithosuchids, it had unusual morphology such as a unique “crocodile‐reversed” ankle joint, a lesser trochanter as in dinosaurs and a few other archosaurs, robust vertebrae, and somewhat shortened, gracile forelimbs.
von Baczko MB   +4 more
europepmc   +2 more sources

Pseudosuchian thermometabolism: A review of the past two decades. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Pseudosuchia, one of the two main clades of Archosauria, is today only represented by some 20 extant species, the crocodilians, representing only a fraction of its extinct diversity. Extant crocodilians are ectotherms but present morphological and anatomical features usually associated with endothermy.
Faure-Brac MG.
europepmc   +2 more sources

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