Results 41 to 50 of about 5,138,357 (259)

The sail-backed reptile Ctenosauriscus from the latest Early Triassic of Germany and the timing and biogeography of the early archosaur radiation [PDF]

, 2011
Background Archosaurs (birds, crocodilians and their extinct relatives including dinosaurs) dominated Mesozoic continental ecosystems from the Late Triassic onwards, and still form a major component of modern ecosystems (>10,000 species). The earliest
Reich, Mike, Stephen L. Brusatte, Hornung, Jahn Jochen, Hornung Jahn J., Nesbitt, Sterling J., Rainer R Schoch, Richard J. Butler, Schoch Rainer R., Hornung, J.J., Rainer R. Schoch, Farke, Andrew Allen, Butler Richard J., Nesbitt, S.J., Brusatte, Stephen L., Butler, Richard J.; id_orcid, Butler, Richard J., Richard J Butler, Butler, R.J., Jahn J Hornung, Sterling J. Nesbitt, Schoch, Rainer R., Hornung, Jahn J., Brusatte, S.L.; id_orcid, Schoch, R.R., Nesbitt Sterling J., Reich Mike, Mike Reich, Brusatte Stephen L., Sterling J Nesbitt, Reich, M., Stephen L Brusatte, Jahn J. Hornung   +31 more
core   +1 more source

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

The Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

Working with laws, regularities and singularities in biology: The evolution of mammalian red blood cell size as a case study

The Anatomical Record, EarlyView.
Abstract Phylogenetic comparative methods have been used in recent literature to work with laws and test for regularities (evolutionary associations of quantitative features) and evolutionary singularities (features that evolved in a single taxon). We analyzed these uses epistemologically, taking the evolution of red‐blood‐cell mean corpuscular volume (
Jorge Cubo, Paul Aubier, Cassandra Cheyron, Isabelle Drouet   +3 more
wiley   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Anomalous Early Triassic sedimentation and weathering in western Guizhou

河南理工大学学报. 自然科学版
ObjectivesTo reveal the early Triassic sedimentary and weathering characteristics and changes in the Weining area， Guizhou，conduct research on Early Triassic abnormal sedimentation and weathering in western Guizhou.Methodsthe thickness， petrography and ...
Deng Xusheng, Yu Wenchao
doaj   +1 more source

Biostratigraphic significance of the tetrapod assem¬blages of the Timan- North Urals region and adjacent areas

Известия высших учебных заведений: Геология и разведка, 2019
New and specified data on the composition of the Triassic tetrapod assemblages of the Timan-North Urals region, the Mezen syneclise and the eastern part of the Moscow syneclise have been given. The succession of the Triassic tetrapod communities known in
I. V. Novikov
doaj   +1 more source

Widespread Grylloblattid Insects After the End-Permian Mass Extinction

Frontiers in Earth Science, 2022
The end-Permian mass extinction (EPME) led to a severe terrestrial ecosystem collapse. However, the ecological response of insects to the EPME remains poorly understood.
Qianqi Zhang, Qianqi Zhang, Edmund A. Jarzembowski, Edmund A. Jarzembowski, Bo Wang, Bo Wang   +5 more
doaj   +1 more source

Exploring the cranial morphology and possible convergences of Triassic non‐crocodylomorph pseudosuchians (Archosauria: Pseudosuchia) with other sauropsids through linear morphometrics

The Anatomical Record, EarlyView.
Abstract Triassic pseudosuchians had highly diversified cranial morphologies. These archosaurs occupied diverse ecological roles, ranging from terrestrial predators and herbivores to semiaquatic ambush predators and possible waders. Here, we apply linear cranial morphometrics to assess possible convergences with other sauropsids from the clades ...
Rafael Terras, Rodrigo Temp Müller, Leonardo Kerber, Mirian Carbonera   +3 more
wiley   +1 more source

Life after extinction: palaeoenvironments of the earliest Triassic lower Katberg formation, including the origin of Lystrosaurus Bonebeds from the Karoo Basin, South Africa [PDF]

, 2012
Includes abstract.Includes bibliographical references.This study argues for the formation of bonebeds by aggregation of sub-adult Lystrosaurus during extended episodic periods of extreme climatic conditions, such as cold or drought, in the earliest ...
Viglietti, Pia A
core   +1 more source

CYCLIC SEDIMENTATION ACROSS THE PERMIAN – TRIASSIC BOUNDARY (CENTRAL TAURIDES, TURKEY)

Rivista Italiana di Paleontologia e Stratigrafia, 2003
The best preserved Permian-Triassic boundary beds in Turkey are found in the Hadim region of the central Taurides. The succession is exposed in one of the allochthonous units of the Tauride Belt, the Aladag Unit, whose stratigraphy includes beds ranging ...
EMRE ÜNAL, DEMIR ALTINER, I. ÖMER YILMAZ, SEVINÇ ÖZKAN-ALTINER   +3 more
doaj   +1 more source