Results 21 to 30 of about 665 (187)

A bird-like skull in a Triassic diapsid reptile increases heterogeneity of the morphological and phylogenetic radiation of Diapsida [PDF]

open access: yesRoyal Society Open Science, 2017
The Triassic Period saw the first appearance of numerous amniote lineages (e.g. Lepidosauria, Archosauria, Mammalia) that defined Mesozoic ecosystems following the end Permian Mass Extinction, as well as the first major morphological diversification of ...
Adam C. Pritchard, Sterling J. Nesbitt
doaj   +2 more sources

A new stem saurian reptile from the late Permian of South Africa and insights into saurian evolution [PDF]

open access: yesSwiss Journal of Palaeontology
The evolutionary radiation of diapsid reptiles that includes all extant and most extinct reptiles is well-represented in the Mesozoic and Cenozoic fossil records, however, the earliest stages recorded in the Paleozoic Era are limited to comparatively few
Ethan Dean Mooney   +2 more
doaj   +2 more sources

A new sphenodontian (Diapsida: Lepidosauria) from the Upper Triassic (Norian) of Germany and its implications for the mode of sphenodontian evolution [PDF]

open access: yesBMC Ecology and Evolution
The Arnstadt Formation of Saxony-Anhalt, Germany has yielded some of Germany’s most substantial finds of Late Triassic tetrapods, including the sauropodomorph Plateosaurus and the stem-turtle Proganochelys quenstedti. Here, we describe an almost complete
Lisa S. Freisem   +3 more
doaj   +2 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

CARINTHIASUCHUS KANDUTSCHI, A NEW ARCHOSAUR (REPTILIA: DIAPSIDA) FROM THE TRIASSIC OF AUSTRIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia
A partial skeleton of a small reptile with a distinctive maxilla, dentition, caudal vertebrae and osteoderms from the marine Partnach Formation (Ladinian-earliest Carnian) near Jadersdorf (Gitschtal, Hermagor) in the Gailtal Alps of Carinthia (Austria),
Fabio Marco Dalla Vecchia, ANDREA CAU
doaj   +2 more sources

Comparative bone histology of two thalattosaurians (Diapsida: Thalattosauria): Askeptosaurus italicus from the Alpine Triassic (Middle Triassic) and a Thalattosauroidea indet. from the Carnian of Oregon (Late Triassic). [PDF]

open access: yesSwiss J Palaeontol, 2023
Here, we present the first bone histological and microanatomical study of thalattosaurians, an enigmatic group among Triassic marine reptiles.
Klein N   +6 more
europepmc   +3 more sources

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

open access: yesRoyal Society Open Science, 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
Torsten M. Scheyer   +5 more
doaj   +1 more source

Inter-relações filogenéticas dos rincossauros (Diapsida, Archosauromorpha) [PDF]

open access: yes, 2015
Rhynchosauria é um grupo basal de arcossauromorfos (Reptilia, Diapsida) encontrados em rochas triássicas de praticamente todo o mundo, que no Triássico Médio e início do Triássico Superior foram os principais componentes de muitas faunas continentais ...
Montefeltro, Felipe Chinaglia   +1 more
openaire   +2 more sources

The enigmatic marine reptile nanchangosaurus from the lower triassic of Hubei, China and the phylogenetic affinities of Hupehsuchia. [PDF]

open access: yesPLoS ONE, 2014
The study of the holotype and of a new specimen of Nanchangosaurus suni (Reptilia; Diapsida; Hupehsuchia) revealed a suite of hitherto unrecognized characters.
Xiao-hong Chen   +4 more
doaj   +1 more source

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