Results 11 to 20 of about 201 (97)

The Late Triassic Ischigualasto Formation at Cerro Las Lajas (La Rioja, Argentina): fossil tetrapods, high-resolution chronostratigraphy, and faunal correlations. [PDF]

open access: yesSci Rep, 2020
Present knowledge of Late Triassic tetrapod evolution, including the rise of dinosaurs, relies heavily on the fossil-rich continental deposits of South America, their precise depositional histories and correlations. We report on an extended succession of
Desojo JB   +10 more
europepmc   +4 more sources

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 ...
Ezcurra MD.
europepmc   +9 more sources

Niche partitioning shaped herbivore macroevolution through the early Mesozoic. [PDF]

open access: yesNat Commun, 2021
The Triassic (252–201 Ma) marks a major punctuation in Earth history, when ecosystems rebuilt themselves following the devastating Permian-Triassic mass extinction.
Singh SA   +5 more
europepmc   +7 more sources

Preliminary observations on the bone histology of the Middle Triassic pseudosuchian archosaur Batrachotomus kupferzellensis reveal fast growth with laminar fibrolamellar bone tissue [PDF]

open access: yes, 2017
The bone tissue of femur, rib, and gastralia from three different individuals of the Middle Triassic pseudosuchian Batrachotomus kupferzellensis from southern Germany is studied.
Foth, Christian   +2 more
core   +3 more sources

A new herrerasaurid dinosaur record from southern BrazilL (Upper Triassic) and its faunal association [PDF]

open access: yes, 2023
The Predebon Site, located in São João do Polêsine, Quarta Colônia region (Rio Grande do Sul, Brazil) has a Triassic fauna, including footprints and traces of small vertebrates and abundant remains of rhynchosaurs.
Ferigolo, Jorge   +3 more
core   +1 more source

A Preliminary Analysis of Archosauromorph Baraminology [PDF]

open access: yes, 2023
Archosauromorpha is a large grouping of reptiles including the Archosauria and other related taxa, such as phytosaurs, rhynchosaurs, and tanystropheids. Phylogenetically, Archosauria contains both crocodilians and birds, as well as several extinct groups
Ahten, Alia   +4 more
core   +2 more sources

The paleoclimatic context for South American Triassic vertebrate evolution [PDF]

open access: yes, 2021
The Triassic Period was the setting for the origin and early diversification of Mesozoic ecosystems after the end-Permian mass extinction. The study of the Triassic is essential to understand the evolution of non-marine Mesozoic ecosystems, particularly ...
Benavente, Cecilia Andrea   +4 more
core   +1 more source

The palatal dentition of tetrapods and its functional significance [PDF]

open access: yes, 2017
The presence of a palatal dentition is generally considered to be the primitive condition in amniotes, with each major lineage showing a tendency toward reduction. This study highlights the variation in palatal tooth arrangements and reveals clear trends
Evans, SE, Matsumoto, R
core   +1 more source

The stem-archosaur evolutionary radiation in South America [PDF]

open access: yes, 2020
The oldest archosauromorphs (dinosaurs, birds, crocodiles, and their stem-taxa) arerecorded in middle−upper Permian rocks, but it was not after the Permo−Triassic massextinction that the group shows a substantially high taxonomic richness ...
Ezcurra, Martin Daniel   +6 more
core   +1 more source

Delimitação de blocos estruturais de diferentes escalas em seqüências mezosóicas do Estado do Rio Grande do Sul: implicações bioestratigraficas [PDF]

open access: yes, 2021
Photolineaments and stream alignments, visible on radar and satellite images and on aerial photos of varied scales, define structural blocks in sedimentary rocks, characterized by a certain stratigraphic homogeneity, allowing the possibility of ...
Faccini, Ubiratan Ferrucio   +1 more
core   +4 more sources

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