Results 21 to 30 of about 265 (132)

The phylogenetic relationships of basal archosauromorphs, with an emphasis on the systematics of proterosuchian archosauriforms [PDF]

open access: yesPeerJ, 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
doaj   +2 more sources

An early Late Triassic long-necked reptile with a bony pectoral shield and gracile appendages [PDF]

open access: yesActa Palaeontologica Polonica, 2016
Several partially articulated specimens and numerous isolated bones of Ozimek volans gen. et sp. nov., from the late Carnian lacustrine deposits exposed at Krasiejów in southern Poland, enable a reconstruction of most of the skeleton.
Jerzy Dzik, Tomasz Sulej
doaj   +1 more source

A new occurrence of the Late Triassic archosaur Smok in southern Poland [PDF]

open access: yesActa Palaeontologica Polonica, 2018
Two isolated teeth, a dorsal vertebra, fragments of a humerus and femur, a fragmentary pubic “boot” and part of an ischium shaft, identified here as belonging to a large predatory archosaur were discovered in the Upper Triassic site at Marciszów near ...
Grzegorz Niedźwiedzki   +1 more
doaj   +1 more source

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

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   +1 more source

Bone histology of Azendohsaurus laaroussii: Implications for the evolution of thermometabolism in Archosauromorpha [PDF]

open access: yesPaleobiology, 2019
Abstract This paper is aimed at constraining the phylogenetic frame of the acquisition of endothermy by Archosauromorpha. We analyzed the bone histology of Azendohsaurus laaroussii . Stylopodial and zeugopodial bones show three tissue types: (1) avascular lamellar zonal bone
Cubo, Jorge, Jalil, Nour-Eddine
openaire   +2 more sources

Widespread azendohsaurids (Archosauromorpha, Allokotosauria) from the Late Triassic of western USA and India [PDF]

open access: yesPapers in Palaeontology, 2021
AbstractArchosauromorph reptiles underwent rapid lineage diversification, increases in morphological and body size disparity, and expansion into new adaptive landscapes. Several of the primary early archosauromorph clades (e.g. rhynchosaurs) are easy to differentiate from others because of their characteristic body types, whereas the more lizard‐like ...
Sterling J. Nesbitt   +10 more
openaire   +2 more sources

A new proterochampsid archosauriform from the Middle–Upper Triassic of Southern Brazil [PDF]

open access: yesActa Palaeontologica Polonica
Proterochampsidae is a clade of carnivorous archosauriforms that lived during the Triassic and is characterized by an elongated rostrum with dorsally oriented external nares, and a unique pes configuration.
RODRIGO T. MÜLLER
doaj   +1 more source

Bone Histology of Phytosaur, Aetosaur, and Other Archosauriform Osteoderms (Eureptilia, Archosauromorpha) [PDF]

open access: yesThe Anatomical Record, 2013
ABSTRACTAs in other archosauriforms, phytosaurs and aetosaurs are characterized by the presence of well‐developed osteoderms. Here we provide a comparative study on the microstructure of phytosaur (five taxa) and aetosaur (thirteen taxa) osteoderms.
Scheyer Torsten M   +2 more
openaire   +5 more sources

A taxonomic revision and cranial description of Terrestrisuchus gracilis (Archosauria, Crocodylomorpha) from the Upper Triassic of Pant‐y‐Ffynnon Quarry (southern Wales)

open access: yesPapers in Palaeontology, Volume 9, Issue 6, November/December 2023., 2023
Abstract Non‐crocodyliform crocodylomorphs, formerly referred to the informal group ‘Sphenosuchia’, are the earliest known crocodylomorph precursors of extant crocodylians. They are therefore crucial for our understanding of early crocodylian evolution and the origin of typical crocodylian characteristics, such as the formation of a secondary palate ...
Stephan N. F. Spiekman   +4 more
wiley   +1 more source

The origin and early evolution of Sauria: reassessing the permian Saurian fossil record and the timing of the crocodile-lizard divergence.

open access: yesPLoS ONE, 2014
Sauria is the crown-group of Diapsida and is subdivided into Lepidosauromorpha and Archosauromorpha, comprising a high percentage of the diversity of living and fossil tetrapods.
Martín D Ezcurra   +2 more
doaj   +1 more source

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