Results 161 to 170 of about 7,570,095 (295)

First filter feeding in the Early Triassic: cranial morphological convergence between Hupehsuchus and baleen whales. [PDF]

open access: yesBMC Ecol Evol, 2023
Fang ZC   +8 more
europepmc   +1 more source

Functional morphology and biomechanics of the locomotor apparatus in the large Late Triassic carnivore Postosuchus kirkpatricki (Archosauria: Rauisuchidae)

open access: yesJournal of Anatomy, EarlyView.
A three‐dimensional model is used to analyze the locomotor biomechanics of the large Late Triassic archosaurian reptile Postosuchus kirkpatricki. The study finds that it is more uncertain than previously concluded whether it was quadrupedal or bipedal, and plantigrade or digitigrade, but it clearly had locomotor specializations including large hindlimb
John R. Hutchinson   +6 more
wiley   +1 more source

Feldspar Albitization With Implications for Reservoir Quality Evolution of Eocene Turbidite Sandstones in Offshore Espírito Santo Basin, Eastern Brazil

open access: yesJournal of Petroleum Geology, EarlyView.
ABSTRACT The diagenetic albitization of plagioclase and K‐feldspar grains is a transformative process that significantly alters sandstone's detrital composition and formation water chemistry, impacting reservoir quality. In this study, Eocene turbidite sandstones from the offshore Espírito Santo Basin, Brazil, were investigated to elucidate the role of
Eveline E. Zambonato   +2 more
wiley   +1 more source

Sequence stratigraphy and paleogeographic setting of the Antimonio Formation (Late Permian-Early Jurassic), Sonora, Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
The Antimonio Formation is a Late Permian, Triassic and Early Jurassic sedimentary succession composed of 14 fining-upwards unconformity-bounded sequences. It contains the Permian-Triassic and Triassic-Jurassic systemic boundaries, which are represented
Carlos M. González-León
doaj  

Early Triassic ichthyopterygian fossils from the Russian Far East. [PDF]

open access: yesSci Rep, 2022
Nakajima Y   +5 more
europepmc   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska   +4 more
wiley   +1 more source

Marine siliceous ecosystem decline led to sustained anomalous Early Triassic warmth. [PDF]

open access: yesNat Commun, 2022
Isson TT   +6 more
europepmc   +1 more source

Calcium and Trace Elemental Ratios of Late Triassic-Early Jurassic Carbonate Platforms (Val Adrara) [PDF]

open access: yes
Calcium isotope ratios (δ44Ca) and minor/trace elemental ratios (Mn, Sr, U, V, Cr, Fe /(Ca + Mg)) were measured from bulk carbonate powders in 2023 on samples collected in 2006 from an outcropping near Val Adrara, Lombardy Basin in the Italian Alps ...
Prow-Fleischer, Ashley   +7 more
core   +1 more source

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta   +9 more
wiley   +1 more source

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