Results 31 to 40 of about 7,820 (264)

Coping between crises: Early Triassic–early Jurassic bivalve diversity dynamics

open access: yesPalaeogeography, Palaeoclimatology, Palaeoecology, 2011
Abstract The Triassic is bounded by two of the most severe biotic crises, but nevertheless this time was, for bivalves, both a recovery and a diversification period, and a moment to fully exploit some of their evolutionary novelties. Just how and when this was achieved is analyzed in this paper, which covers Induan to Sinemurian bivalve diversity ...
Ros, Sonia   +3 more
openaire   +2 more sources

Gastropod evidence against the Early Triassic Lilliput effect: COMMENT [PDF]

open access: yesGeology, 2011
[Brayard et al. (2010)][1] assert that their study of late Early Triassic gastropods provides evidence against the post-extinction Lilliput effect. Regrettably, their data provide no such evidence.
Fraiser, M. L.   +4 more
openaire   +2 more sources

Sedimentary environment evolution of the Jialingjiang Formation in the Maling area: Evidence from sedimentology and major and trace elements

open access: yes地质科技通报, 2022
The Maling area is located in Xingyi City, Guizhou Province.It is an idea area to study the evolution of the sedimentary environment in the Early Triassic for its sedimentary strata saddle the Permian and Triassic transition.Based on the integrations of ...
Liuyun Ouyang   +4 more
doaj   +1 more source

The Triassic climate and its evolutionary characteristics in Jiyuan area in south of North China Plate: Evidence from paleosol geochemistry

open access: yes河南理工大学学报. 自然科学版
ObjectivesThe Triassic period was a period of rapid fluctuation of greenhouse climate, and the paleosol recorded abundant paleoclimate information. To study the climate change process from extreme to medium greenhouse,Methodsthe Triassic paleosoils in ...
YANG Wentao   +3 more
doaj   +1 more source

PERMIAN-TRIASSIC BOUNDARY AND EARLY TRIASSIC CONODONTS FROM THE SOUTHERN ALPS, ITALY

open access: yesRIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA, 2020
The Bellerophon (Late Permian) and Werfen (Lower Triassic) Formations were investigated on the basis of conodonts. Fifteen sections were sampled from Carnic Alps and Dolomites area in the Southern Alps. Ten were productive. The Bellerophon Formation yielded a few specimens of Hindeodus typicalis, Ellisonia agordina and Ellisonia sp. In the ...
PERRI, MARIA CRISTINA   +1 more
openaire   +2 more sources

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

open access: yesLethaia, 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   +4 more
wiley   +1 more source

Rapid neck elongation in Sauropterygia (Reptilia: Diapsida) revealed by a new basal pachypleurosaur from the Lower Triassic of China

open access: yesBMC Ecology and Evolution, 2023
Neck elongation has appeared independently in several tetrapod groups, including giraffes and sauropod dinosaurs on land, birds and pterosaurs in the air, and sauropterygians (plesiosaurs and relatives) in the oceans.
Qi-Ling Liu   +6 more
doaj   +1 more source

Evidence for multi-rifting in the Variscan–Alpine cycle transition: insights from the European western Southern Alps [PDF]

open access: yesSolid Earth
We investigate the transition between the Paleozoic Variscan cycle and the Mesozoic–Cenozoic Alpine supercontinent cycle, both of which have played a pivotal role in shaping the central European–Mediterranean plate architecture.
E. Scaramuzzo   +3 more
doaj   +1 more source

The sauropodomorph biostratigraphy of the Elliot Formation of southern Africa: Tracking the evolution of Sauropodomorpha across the Triassic–Jurassic boundary [PDF]

open access: yesActa Palaeontologica Polonica, 2017
The latest Triassic is notable for coinciding with the dramatic decline of many previously dominant groups, followed by the rapid radiation of Dinosauria in the Early Jurassic.
Blair W. McPhee   +3 more
doaj   +1 more source

Understanding the provenance and depositional conditions of Triassic sedimentary rocks from the Spiti region, Tethys Himalaya, India

open access: yesJournal of Asian Earth Sciences: X, 2023
The Spiti region, renowned as the Museum of Indian Geology, is a world-famous sedimentary succession containing well-exposed sequences from Neoproterozoic to Cretaceous age. In this study, Triassic siliciclastic sedimentary rocks of the Lilang Supergroup
Javid A. Ganai   +5 more
doaj   +1 more source

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