Results 11 to 20 of about 794 (167)

The histology of rhynchosaur (Diapsida, Archosauromorpha) ankylothecodonty. [PDF]

open access: yesJ Anat
The study of the connection between the teeth and the jaw is important for understanding the palaeobiology of vertebrates, but inconsistent terminology and incomplete sampling have made it difficult to assess the evolutionary significance of some of the ...
Mestriner G   +7 more
europepmc   +5 more sources

TANYSTROPHEUS (ARCHOSAUROMORPHA, PROLACERTIFORMES) REMAINS FROM THE TRIASSIC OF THE NORTHERN FRIULI (NE ITALY) [PDF]

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2000
The first diagnostic remains of the large prolacertiform Tanystropheus are reported from northeastern Italy. They include a proximal caudal vertebra from the Middle Triassic of Aupa valley (Udine, Friuli) and a cervical vertebra from the Carnian of Fusea
FABIO MARCO DALLA VECCHIA
doaj   +8 more sources

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

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   +2 more sources

Osteohistology of hyperodapedontine rhynchosaurs from the Upper Triassic of Southern Brazil [PDF]

open access: yesActa Palaeontologica Polonica, 2015
The first osteohistological study focused exclusively on rhynchosaurs (non-archosauriform archosauromorphs), based on the hyperodapedontines Teyumbaita sulcognathus and Hyperodapedon sp., from the Upper Triassic of Southern Brazil, indicates a relatively
Fábio Hiratsuka Veiga   +2 more
doaj   +3 more sources

Rise of dinosaurs reveals major body-size transitions are driven by passive processes of trait evolution. [PDF]

open access: yesProc Biol Sci, 2012
A major macroevolutionary question concerns how long-term patterns of body-size evolution are underpinned by smaller scale processes along lineages.
Sookias RB, Butler RJ, Benson RB.
europepmc   +3 more sources

Colobops: a juvenile rhynchocephalian reptile (Lepidosauromorpha), not a diminutive archosauromorph with an unusually strong bite. [PDF]

open access: yesR Soc Open Sci, 2020
Correctly identifying taxa at the root of major clades or the oldest clade-representatives is critical for meaningful interpretations of evolution. A small, partially crushed skull from the Late Triassic (Norian) of Connecticut, USA, originally described
Scheyer TM   +5 more
europepmc   +5 more sources

The braincase of Mesosuchus browni (Reptilia, Archosauromorpha) with information on the inner ear and description of a pneumatic sinus [PDF]

open access: yesPeerJ, 2019
Rhynchosauria is a group of archosauromorph reptiles abundant in terrestrial ecosystems of the Middle Triassic. Mesosuchus is one of the earliest and basalmost rhynchosaurs, playing an important role not only for the understanding of the evolution of the
Gabriela Sobral, Johannes Müller
doaj   +4 more sources

The rise of the ruling reptiles and ecosystem recovery from the Permo-Triassic mass extinction. [PDF]

open access: yesProc Biol Sci, 2018
One of the key faunal transitions in Earth history occurred after the Permo-Triassic mass extinction (ca 252.2 Ma), when the previously obscure archosauromorphs (which include crocodylians, dinosaurs and birds) become the dominant terrestrial vertebrates.
Ezcurra MD, Butler RJ.
europepmc   +6 more sources

The holotype of the basal archosauromorph Prolacerta broomi revisited [PDF]

open access: yesActa Palaeontologica Polonica, 2023
Prolacerta broomi is one of the most important of fossil reptiles. First considered as one of the earliest members of squamates, this basal archosauromorph has been used as a model for diapsid morphological evolution ever since its discovery, playing ...
GABRIELA SOBRAL
doaj   +1 more source

Comparative bone microstructure of three archosauromorphs from the Carnian, Late Triassic Chañares Formation of Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2020
The Chañares Formation exhibits one of the most important archosauriform records of early Carnian ecosystems. Here we present new data on the palaeohistology of Chañares archosauriforms and provide new insights into their paleobiology, as well as ...
Jordi Alexis Garcia Marsà   +2 more
doaj   +1 more source

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