Results 11 to 20 of about 1,726,480 (235)

Paleoenvironments of Late Devonian tetrapods in China. [PDF]

open access: yesSci Rep, 2023
The major evolutionary transition from fish to amphibian included Late Devonian tetrapods that were neither fish nor amphibian. They had thick necks and small limbs with many digits on elongate flexuous bodies more suitable for water than land.
Guo X, Retallack GJ, Liu J.
europepmc   +5 more sources

Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia. [PDF]

open access: yesPeerJ, 2020
The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum.
Champreux A   +2 more
europepmc   +4 more sources

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

Was there more space in the late Early Devonian for marine biodiversity to peak than in the early Late Ordovician?: A brief note [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2013
After the so-called “Cambrian explosion”, marine biodiversity peaked either in the early Late Ordovician (as shown by the “classical” curves based on the extensive palaeontological data compilation) or in the late Early Devonian (as shown by the
Ruban Dmitry A.
doaj   +2 more sources

A Late Devonian tree lycopsid with large strobili and isotomous roots. [PDF]

open access: yesCommun Biol, 2022
A new species of Late Devonian fossil lycopsid with large strobili and differentiated sporophylls provides insight into reproductive investment of early tree lycopsids.
Liu L   +5 more
europepmc   +2 more sources

Palynostratigraphic reassessment of the Late Devonian of Bjørnøya, Svalbard

open access: yesReview of Palaeobotany and Palynology, 2021
Abstract A comprehensive study of the Late Devonian palynostratigraphy of Bjornoya, Svalbard Archipelago is presented. A total of 61 samples collected from 10 outcrops located along the eastern coast of the island were analyzed for palynology yielding a mid- to latest Famennian age.
Lopes, Gilda   +3 more
openaire   +3 more sources

Pollen Organ Telangiopsis sp. of Late Devonian Seed Plant and Associated Vegetative Frond. [PDF]

open access: yesPLoS One, 2016
Pollen organ Telangiopsis sp., associated with but not attached to vegetative fronds, has been collected from the Upper Devonian (Famennian) Wutong Formation, Dongzhi County, Anhui Province, China. Fertile axes with terminal pollen organs are dichotomous
Wang DM, Meng MC, Guo Y.
europepmc   +2 more sources

LATE DEVONIAN CONODONTS FROM THE HOJEDK SECTION, KERMAN PROVINCE, SOUTHEASTERN IRAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2008
Conodonts (34 species and subspecies) from the Hojedk section north of Kerman span the late Givetian to early Famennian. The new data suggest that Devonian biostromes in central and eastern Iran were deposited on differing levels, and that the currently ...
HOSSEIN GHOLAMALIAN   +1 more
doaj   +2 more sources

A new elpistostegalian from the Late Devonian of the Canadian Arctic. [PDF]

open access: yesNature, 2022
AbstractA fundamental gap in the study of the origin of limbed vertebrates lies in understanding the morphological and functional diversity of their closest relatives. Whereas analyses of the elpistostegalians Panderichthys rhombolepis, Tiktaalik roseae and Elpistostege watsoni have revealed a sequence of changes in locomotor, feeding and respiratory ...
Stewart TA   +4 more
europepmc   +3 more sources

Early sarcopterygian morphological disparity through the Devonian-Carboniferous crisis. [PDF]

open access: yesSci Rep
Major morphological adaptations characterized the early evolutionary history of sarcopterygians during the Devonian (419–359 Ma) and the Carboniferous (359–299 Ma), punctuated by environmental changes and biodiversity crises.
Vanhaesebroucke O   +2 more
europepmc   +2 more sources

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