Results 41 to 50 of about 352 (136)

The first ornithosuchid from Brazil and its macroevolutionary and phylogenetic implications for Late Triassic faunas in Gondwana [PDF]

open access: yesActa 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
doaj   +1 more source

The osteohistology of Orthosuchus stormbergi using synchrotron radiation microcomputed tomography. [PDF]

open access: yesJ Anat
The osteohistology of Orthosuchus stormbergi is described for the first time. The primary bone tissue was lamellar bone. It had relatively thick bone walls, possibly indicating an aquatic lifestyle. Orthosuchus was a small bodied adult reaching a maximum body mass of about 1.2 kg.
Weiss BM   +4 more
europepmc   +2 more sources

Intraspecific variation in the axial skeleton of Aetosauroides scagliai (Archosauria: Aetosauria) and its implications for the aetosaur diversity of the Late Triassic of Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2021
Aetosauria represents a remarkable clade of armored pseudosuchians in which some of its oldest members are recovered from late Carnian units of Brazil. Three species are known: the mid-sized aetosaur Aetosauroides scagliai, which also occurs in Argentina,
VOLTAIRE D. PAES-NETO   +5 more
doaj   +1 more source

A new erpetosuchid (Pseudosuchia, Archosauria) from the Middle–Late Triassic of Southern Brazil

open access: yesZoological Journal of the Linnean Society, 2018
Marco A G de França   +2 more
core   +2 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

Anatomical notes and discussion of the first described aetosaur Stagonolepis robertsoni (Archosauria: Suchia) from the Upper Triassic of Europe, and the use of plesiomorphies in aetosaur biochronology [PDF]

open access: yesPeerJ, 2018
Stagonolepis robertsoni, from the Late Triassic of Scotland, was the first named aetosaurian. Known mostly from a series of natural molds from two localities, the osteology of this taxon has been difficult to interpret.
William G. Parker
doaj   +2 more sources

Paleohistological inferences of thermometabolic regimes in Notosuchia (Pseudosuchia: Crocodylomorpha) revisited

open access: yesPaleobiology, 2022
Abstract Notosuchia is a group of mostly terrestrial crocodyliforms. The presence of a prominent crest overhanging the acetabulum, slender straight-shafted long bones with muscular insertions close to the joints, and a stable knee joint suggests that they had an erect posture.
Cubo, Jorge   +6 more
openaire   +2 more sources

Unappreciated diversification of stem archosaurs during the Middle Triassic predated the dominance of dinosaurs. [PDF]

open access: yesBMC Evol Biol, 2016
Archosauromorpha originated in the middle–late Permian, radiated during the Triassic, and gave rise to the crown group Archosauria, a highly successful clade of reptiles in terrestrial ecosystems over the last 250 million years.
Foth C   +4 more
europepmc   +2 more sources

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 ...
Stephan Lautenschlager   +1 more
doaj   +2 more sources

The first braincase of the basal aetosaur Aetosauroides scagliai (Archosauria: Pseudosuchia) from the Upper Triassic of Brazil

open access: yes, 2021
The phylogenetic relationships of Pseudosuchia, the crocodile-line of Archosauria, are still poorly resolved, in part, due to the lack of crucial braincase information for several key taxa.
Ana M. Ribeiro (1361490)   +5 more
core   +1 more source

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