Results 71 to 80 of about 8,565 (224)

NEW DATA ON MIDDLE DEVONIAN CONODONTS FROM SW-SARDINIA:THE SU NUARGI II SECTION REVISITED

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2013
The conodont collection from the nodular limestone beds of the Su Nuargi II outcrop near Domusnovas in SW-Sardinia (Italy) is restudied for the purpose of reassessing the outcrop and updating the conodont collection to the most recent taxonomy. Su Nuargi
SOFIE GOUWY
doaj   +1 more source

Middle Darriwilian conodont zones in the uppermost San Juan limestone and the lower member of the Las Aguaditas formation, central Precordillera of San Juan, Argentina [PDF]

open access: yes, 2013
The geological province of Precordillera is located in western Argentina. It extends 450 km meridionally and 110 km from east to west (Fig. 1) (Furque and Cuerda, 1979).
Albanesi, Guillermo Luis   +2 more
core  

Linking palaeo‐wildfire to depositional environmental and ecological dynamics of an Early–Middle Pennsylvanian fluvial‐tidal transition zone—Palynology and pyrolysis evidence

open access: yesThe Depositional Record, Volume 12, Issue 1, February 2026.
The Pennsylvanian landscape in the Forest City basin was characterised by low‐lying lycopod tree and fern swamp forests with persistently high groundwater tables and adjacent fluvial channel, floodplain and upland environments. The occurrence of abundant charcoal within a specific thin interval in the Cherokee Group indicates substantial wildfire ...
Dustin Northrup   +3 more
wiley   +1 more source

Depositional History of the St. Joe and Boone Formations in Northern Arkansas [PDF]

open access: yes, 1986
The Kinderhookian-Osagean (Lower Mississippian) St. Joe and Boone Limestone represent an unconformity bounded transgressive-regressive sequence widely distributed throughout the southern midcontinent.
Shelby, Phillip R.
core   +2 more sources

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald   +17 more
wiley   +1 more source

Conodont zonation of Lower Triassic strata in Slovenia

open access: yesGeologija, 2015
The paper presents the results of a conodont study carried out in the Triassic strata in the area of the Slovenian part of the Southern Alps, External Dinarides and the Transition region between the External and Internal Dinarides.
Tea Kolar-Jurkovšek, Bogdan Jurkovšek
doaj   +1 more source

Fusulinids from the Howe Limestone Member (Red Eagle Limestone, Council Grove Group) in Northeastern Kansas and Their Significance to the North American Carboniferous (Pennsylvanian)-Permian Boundary [PDF]

open access: yes, 2010
Fusulinids from the Howe Limestone Member (upper part of the Red Eagle Limestone, lower part of the Council Grove Group) are described here for the first time. The Howe fauna is particularly significant because it represents the earliest fusulinids known
Wahlman, Gregory P., West, Ronald R.
core   +3 more sources

Increased Continental Exposure as a Driver of Carbon Drawdown and Initiation of the Late Paleozoic Ice Age

open access: yesGeophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Earth experienced a long‐term cooling trend during the middle‐late Devonian, culminating in the Late Paleozoic Ice Age (LPIA)—the longest icehouse in Earth's history. The onset of glaciation has been attributed to CO2 removal through silicate weathering, however previous carbon cycle models have failed to reproduce its timing. Here, we build a
Yinggang Zhang   +5 more
wiley   +1 more source

LATE DEVONIAN-CARBONIFEROUS CONODONTS FROM EASTERN IRAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 1999
Conodont data from acid-leaching 110 samples from two Late Devonian-Carboniferous areas in the Shotori Range (Tabas region) of eastern Iran are presented.
MEHDI YAZDI
doaj   +1 more source

Composition, structure and model of the formation of conodont lamellar tissue

open access: yesЛитосфера, 2020
Research subject. This research was focused on the most common mineralized tissue that composes conodont elements. The aim was to investigate the characteristics of the composition and structure of this tissue and to reconstruct its formation process ...
A. V. Zhuravlev
doaj   +1 more source

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