Results 21 to 30 of about 110,133 (262)

Tip dating supports novel resolutions of controversial relationships among early mammals [PDF]

open access: yes, 2020
The estimation of the timing of major divergences in early mammal evolution is challenging due to conflicting interpretations of key fossil taxa. One contentious group is Haramiyida, the earliest members of which are from the Late Triassic.
Beck, RMD, King, B
core   +2 more sources

Revision of the thylacocephalan biota from the Upper Triassic Polzberg Konservat-Lagerstätte, Austria [PDF]

open access: yesActa Palaeontologica Polonica
Known for over 140 years, the Upper Triassic Polzberg Konservat-Lagerstätte is an exceptional early Carnian marine assemblage discovered in the Northern Calcareous Alps of Lower Austria. The Polzberg biota is composed of a diverse marine fauna, including
Thomas Laville   +2 more
doaj   +1 more source

Late Triassic (Rhaetian) conodonts and ichthyoliths from Chile [PDF]

open access: yes, 2000
The Late Triassic of the back arc Domeyko Basin, Chile is characterized by the onset of marine sedimentation that persisted throughout the rest of the Mesozoic.
Sansom, Ivan J.
core   +1 more source

The craniomandibular anatomy of the early archosauriform Euparkeria capensis and the dawn of the archosaur skull [PDF]

open access: yesRoyal Society Open Science, 2020
Archosauria (birds, crocodilians and their extinct relatives) form a major part of terrestrial ecosystems today, with over 10 000 living species, and came to dominate the land for most of the Mesozoic (over 150 Myr) after radiating following the Permian ...
Roland B. Sookias   +7 more
doaj   +1 more source

The Early Evolution of Rhynchosaurs [PDF]

open access: yes, 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).
Butler, Richard J.   +2 more
core   +3 more sources

Functional diversity of marine ecosystems after the Late Permian mass extinction event [PDF]

open access: yes, 2014
Article can be accessed from http://www.nature.com/ngeo/journal/v7/n3/full/ngeo2079.htmlThe Late Permian mass extinction event was the most severe such crisis of the past 500 million years and occurred during an episode of global warming.
A Baud   +49 more
core   +1 more source

Magnetostratigraphy of the Lower Triassic beds from Chaohu(China) and its implications for the Induan–Olenekian stage boundary. [PDF]

open access: yes, 2009
A magnetostratigraphic study was performed on the lower 44 m of the West Pingdingshan section near Chaohu city, (Anhui province, China) in order to provide a magnetic polarity scale for the early Triassic.
Sun, Zhiming   +5 more
core   +2 more sources

Pre-Carpels from the Middle Triassic of Spain

open access: yesPlants, 2022
In stark contrast to the multitude of hypotheses on carpel evolution, there is little fossil evidence testing these hypotheses. The recent discovery of angiosperms from the Early Jurassic makes the search for precursors of angiosperm carpels in the ...
Artai A. Santos, Xin Wang
doaj   +1 more source

Intercalibration of Boreal and Tethyan timescales: the magneto-biostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway [PDF]

open access: yes, 2008
An integrated bio-magnetostratigraphic study of the latest Early Triassic to the upper parts of the Middle Triassic, at Milne Edwardsfjellet in central Spitsbergen, Svalbard, allows a detailed correlation of Boreal and Tethyan biostratigraphies.
Hounslow, Mark W.   +6 more
core   +1 more source

Postcranial osteology of the first early-stage juvenile skeleton of Plateosaurus trossingensis from the Norian of Frick, Switzerland [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Owing to monospecific mass-accumulation sites in Central Europe, the early-branching sauropodomorph Plateosaurus has one of the best fossil records among dinosaurs. Despite this, early-stage juveniles have been conspicuously absent.
Darius Nau   +3 more
doaj   +1 more source

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