Results 1 to 10 of about 3,963,527 (187)

Paleoenvironments of Late Devonian tetrapods in China. [PDF]

open access: yesSci Rep, 2023
AbstractThe 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   +4 more sources

A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans. [PDF]

open access: yesCommun Biol, 2020
The Palaeozoic record of chondrichthyans (sharks, rays, chimaeras, extinct relatives) and thus our knowledge of their anatomy and functional morphology is poor because of their predominantly cartilaginous skeletons.
Frey L   +4 more
europepmc   +2 more sources

A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada). [PDF]

open access: yesSci Rep, 2021
AbstractLike other soft-bodied organisms, ctenophores (comb jellies) produce fossils only under exceptional taphonomic conditions. Here, we present the first record of a Late Devonian ctenophore from the Escuminac Formation from Miguasha in eastern Canada.
Klug C, Kerr J, Lee MSY, Cloutier R.
europepmc   +5 more sources

Precisely dating the Frasnian-Famennian boundary: implications for the cause of the Late Devonian mass extinction. [PDF]

open access: yesSci Rep, 2018
The Frasnian–Famennian boundary records one of the most catastrophic mass extinctions of the Phanerozoic Eon. Several possible causes for this extinction have been suggested, including extra-terrestrial impacts and large-scale volcanism. However, linking
Percival LME   +5 more
europepmc   +2 more sources

Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity. [PDF]

open access: yesNat Commun, 2017
The Late Devonian envelops one of Earth’s big five mass extinction events at the Frasnian–Famennian boundary (374 Ma). Environmental change across the extinction severely affected Devonian reef-builders, besides many other forms of marine life.
De Vleeschouwer D   +7 more
europepmc   +2 more sources

The first direct evidence of a Late Devonian coelacanth fish feeding on conodont animals. [PDF]

open access: yesNaturwissenschaften, 2017
We describe the first known occurrence of a Devonian coelacanth specimen from the lower Famennian of the Holy Cross Mountains, Poland, with a conodont element preserved in its digestive tract.
Zatoń M   +4 more
europepmc   +2 more sources

A new Late Devonian genus with seed plant affinities. [PDF]

open access: yesBMC Evol Biol, 2015
Many ovules of Late Devonian (Famennian) seed plants have been well studied. However, because few taxa occur with anatomically preserved stems and/or petioles, the vascular system of these earliest spermatophytes is little understood and available data come mostly from Euramerica.
Wang D, Liu L.
europepmc   +4 more sources

Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction

open access: yes, 2021
Oceanic anoxia is considered as the immediate cause of the Frasnian–Famennian mass extinction, yet the frequency of anoxia and associated environmental modulators remains unknown.
Man Lu   +7 more
semanticscholar   +1 more source

Middle and Late Devonian paleogeography of the eastern Anti-Atlas (Morocco)

open access: yesInternational journal of earth sciences, 2021
The eastern Anti-Atlas of Morocco represents one of the most completely exposed and perfectly documented biostratigraphic records of the entire Devonian worldwide.
J. Wendt
semanticscholar   +1 more source

Living on the edge: The impact of protracted oxygen stress on life in the Late Devonian

open access: yes, 2021
The Late Devonian records one of the most dramatic series of taxonomic and ecological turnovers in the history of life. The precise controls over the elevated extinctions and depressed origination rates at this time are not fully resolved, but reduced ...
D. Boyer   +7 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy