Results 11 to 20 of about 704 (154)
Geophysical Research LettersThe iso‐ or diachronous character of a geologic unit is scale‐dependent, especially for time‐specific facies. The Usseln Limestone is a Late Devonian time‐specific facies from Germany, occurring immediately below the Lower Kellwasser black shale.
N. M. A. Wichern +4 more
doaj +2 more sources
Evidence for Late Devonian (Kellwasser) anoxic events in the Great Basin, western United States [PDF]
, 2005 The Frasnian-Famennian (Late Devonian) mass extinction has often been related to the development of the Kellwasser anoxic events in Europe and North Africa but the synchronous development of the anoxia has not been reported from the Great Basin of the ...
Bond, D.P.G., Wignall, P.B.
core +3 more sources
Re-make, re-model: evolution and development of vertebrate cranial lateral lines. [PDF]
Biol Rev Camb Philos SocABSTRACT Lateral lines are placodally derived mechanosensory systems on the heads and trunks of many aquatic vertebrates. There is evidence of lateral lines in the earliest known vertebrate fossils, and they exist in organisms with widely different craniofacial morphologies – including the presence or absence of jaws, external or internal nostrils, and
Venkataraman V +3 more
europepmc +2 more sources
Paleogeography And Paleoenvironments Of The Late Devonian Kellwasser Event: A Review Of Its Sedimentological And Geochemical Expression [PDF]
Global and Planetary Change, 2019 The Late Devonian (383-359 Ma) was a time of prolonged climate instability with catastrophic perturbation of global marine ecosystems at the Frasnian-Famennian (F-F) and the Devonian-Carboniferous (D-C) boundaries. The causes and mechanisms of anoxia and
Carmichael, Sarah K. +1 more
core +3 more sources
Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism
Geophysical Monograph Series, Page 83-102., 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.
David P. G. Bond, Yadong Sun
wiley +2 more sources
The Heavy Links between Geological Events and Vascular Plants Evolution: A Brief Outline. [PDF]
Int J Evol Biol, 2016 Since the rise of photosynthesis, life has influenced terrestrial atmosphere, particularly the O2 and the CO2 content (the latter being originally more than 95%), changing the chemistry of waters, atmosphere, and soils. Billions of years after, a far offspring of these first unicellular forms conquered emerging lands, not only completely changing ...
Piombino A.
europepmc +2 more sources
Rise and fall of the phacopids: the morphological history of a successful trilobite family
Palaeontology, Volume 66, Issue 5, September/October 2023., 2023 Abstract Phacopidae were a successful family of the Silurian–Devonian period. Although their diversity trends are well identified, their shape evolution is unknown; their morphology often considered to be conservative. We have quantified these morphologies using geometric morphometrics (landmarks) and investigated their evolution using morphological ...
Valentin Bault +7 more
wiley +1 more source
Sedimentology, Volume 70, Issue 5, Page 1413-1471, August 2023., 2023 ABSTRACT The study examines bioclastic carbonate contourites that arise from the broad spectrum of bottom‐current related sedimentary processes ranging from deposition to erosion. The result of the intermittent accumulation of sediment are thin and condensed successions with abundant hiatuses.
Heiko Hüneke +9 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 24, Issue 6, June 2023., 2023 Abstract Anomalous mercury (Hg) contents recorded near the Permian‐Triassic boundary (PTB) are often linked to Siberian Traps Large Igneous Province (STLIP) volcanism and the Permian‐Triassic boundary mass extinction (PTBME). However, mounting evidence indicates that the relation between STLIP volcanism and Hg “anomalies” is not straightforward.
Oluwaseun Edward +7 more
wiley +1 more source
Palaeontology, Volume 66, Issue 2, March/April 2023., 2023 Abstract Geometric morphometric approaches become increasingly applied in the fields of biology and palaeontology. Taxonomy is a good example, where a long‐standing intention of scientists is to eliminate subjectivity as much as possible. In the case of biostratigraphically important conodont elements, the application of such methods is not widespread.
Attila Virág +2 more
wiley +1 more source