Results 11 to 20 of about 58,521 (270)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+13 more sources

The palaeopsychrosphere in the Devonian [PDF]

open access: yesLethaia, 2018
The interpretation of Palaeozoic marine benthonic ostracods of the Thuringian "Ecotype" or "Mega-assemblage" as indicative of a palaeopsychrosphere has been controversial.
S. Crasquin, D. Horne
semanticscholar   +6 more sources

A new look at the Emsian (Early Devonian), sarcopterygian fishes from the Holy Cross Mountains, Poland, with a special reference to porolepiforms

open access: yesActa Palaeontologica Polonica, 2023
Sarcopterygian remains are relatively common in the so-called “Placoderm Sandstone” (storm-origin bone-bearing breccia) from the Emsian (Lower Devonian) of Podłazie in the Holy Cross Mountains (Poland).
OLGA WILK
doaj   +1 more source

New investigations of Upper Devonian wood from the north of the European part of Russia

open access: yesActa Palaeobotanica, 2020
The paper describes a continuation of our research on the distribution of archaeopteridalean plants in the north of the European part of the Russian Federation.
Anna Lyubarova, Sergey M. Snigirevsky
doaj   +1 more source

Echinoderms of the Iowa Devonian [PDF]

open access: hybridIowa Geological Survey Annual Report, 1921
Reprinted from the Iowa Geological Survey. Annual reports, 1919-1920. ; Mode of access: Internet.
A. O. Thomas
openalex   +4 more sources

Fish assemblages from the Middle–Upper Devonian of the Middle Urals, Russia

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2022
New assemblages of diverse fishes from the Givetian–Famennian were described in six sections in the Middle Urals: Pokrovskoe, Baronskaya, Sulem, Pershino, Yokva, and Vilva.
A.O. Ivanov
doaj   +1 more source

New information on Brindabellaspis stensioi Young, 1980, highlights morphological disparity in Early Devonian placoderms [PDF]

open access: yesRoyal Society Open Science, 2018
Acid-prepared specimens of the placoderm Brindabellaspis stensioi (Early Devonian of New South Wales, Australia) revealed placoderm endocranial anatomy in unprecedented detail.
Benedict King   +2 more
doaj   +1 more source

Paleontological rescue, depositional environment, and stratigraphic correlation of a section of the Ponta Grossa Formation (Paraná Basin)

open access: yesTerr@ Plural, 2021
The urban area of Ponta Grossa (PR) occurs on one of the most abundant fossiliferous fields in the country, which records an endemic fauna that occurred in the Devonian of the Paraná Basin.
Elvio Pinto Bosetti   +6 more
doaj   +1 more source

Ichnological Research of Silurian–Devonian Strata and the Zoophycos Distribution in the Paraná Basin

open access: yesTerr@ Plural, 2021
The Silurian–Devonian strata of the Paraná Basin (southern Brazil) have a wide variety of ichnofossils. The first records date from the beginning of the last century, with pioneering studies in 1912 addressing the Furnas and Ponta Grossa formations ...
Kevin William Richter   +2 more
doaj   +1 more source

Structural and Geochronological Constraints on Devonian Suprasubduction Tectonic Switching and Permian Collisional Dynamics in the Chinese Altai, Central Asia

open access: yesTectonics, 2019
Kinematic significance and time scales of geodynamic processes forming the Altai Orogenic Belt are addressed through structural and petrological analysis combined with zircon and monazite geochronology.
Yingde Jiang   +10 more
semanticscholar   +1 more source

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