Results 1 to 10 of about 794 (167)

Heteropelta boboi n. gen., n. sp. an armored archosauriform (Reptilia: Archosauromorpha) from the Middle Triassic of Italy [PDF]

open access: yesPeerJ, 2021
Heteropelta boboi is a new archosauriform reptile from the upper Anisian of northeastern Italy represented by a fragment of dorsal armor with a row of neural arches of the dorsal vertebrae.
Fabio Marco Dalla Vecchia
doaj   +9 more sources

Locomotion and the early Mesozoic success of Archosauromorpha [PDF]

open access: yesRoyal Society Open Science
The Triassic was a time of ecological upheaval as life recovered from the Permian-Triassic mass extinction. Archosauromorphs were a key component of the recovery, diversifying substantially during the Triassic and encompassing the origins of dinosaurs ...
Amy E. Shipley   +4 more
doaj   +5 more sources

The cranial morphology of Tanystropheus hydroides (Tanystropheidae, Archosauromorpha) as revealed by synchrotron microtomography [PDF]

open access: yesPeerJ, 2020
The postcranial morphology of the extremely long-necked Tanystropheus hydroides is well-known, but observations of skull morphology were previously limited due to compression of the known specimens.
Stephan N.F. Spiekman   +6 more
doaj   +8 more sources

The affinities of the Late Triassic Cryptovaranoides and the age of crown squamates [PDF]

open access: yesRoyal Society Open Science, 2023
Most living reptile diversity is concentrated in Squamata (lizards, including snakes), which have poorly known origins in space and time. Recently, †Cryptovaranoides microlanius from the Late Triassic of the United Kingdom was described as the oldest ...
Chase D. Brownstein   +5 more
doaj   +2 more sources

A new phylogenetic hypothesis of Tanystropheidae (Diapsida, Archosauromorpha) and other “protorosaurs”, and its implications for the early evolution of stem archosaurs [PDF]

open access: yesPeerJ, 2021
The historical clade “Protorosauria” represents an important group of archosauromorph reptiles that had a wide geographic distribution between the Late Permian and Late Triassic.
Stephan N.F. Spiekman   +2 more
doaj   +3 more sources

An armoured marine reptile from the Early Triassic of South China and its phylogenetic and evolutionary implications [PDF]

open access: yeseLife, 2023
Sauropterygia was a taxonomically and ecomorphologically diverse clade of Mesozoic marine reptiles spanning the Early Triassic to the Late Cretaceous.
Andrzej S Wolniewicz   +7 more
doaj   +2 more sources

The early evolution of rhynchosaurs [PDF]

open access: yesFrontiers in Ecology and Evolution, 2016
The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian).
Martin Daniel Ezcurra   +3 more
doaj   +5 more sources

Extreme neck elongation evolved despite strong developmental constraints in bizarre Triassic reptiles—implications for neck modularity in archosaurs [PDF]

open access: yesRoyal Society Open Science
The Triassic radiation of vertebrates saw the emergence of the modern vertebrate groups, as well as numerous extinct animals exhibiting conspicuous, unique anatomical characteristics.
Adam Rytel   +3 more
doaj   +2 more sources

Rapid Initial Morphospace Expansion and Delayed Morphological Disparity Peak in the First 100 Million Years of the Archosauromorph Evolutionary Radiation [PDF]

open access: yesFrontiers in Earth Science, 2021
Adaptive radiations have played a major role in generating modern and deep-time biodiversity. The Triassic radiation of the Archosauromorpha was one of the most spectacular vertebrate radiations, giving rise to many highly ecomorphologically varied ...
Christian Foth   +6 more
doaj   +4 more sources

A new archosauriform species from the Panchet Formation of India and the diversification of Proterosuchidae after the end-Permian mass extinction

open access: yesRoyal Society Open Science, 2023
Proterosuchidae represents the oldest substantial diversification of Archosauromorpha and plays a key role in understanding the biotic recovery after the end-Permian mass extinction.
Martín Daniel Ezcurra   +2 more
exaly   +3 more sources

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