Results 21 to 30 of about 704 (154)

Morphological disparity trends in Devonian trilobites from North Africa

Palaeontology, Volume 65, Issue 5, September/October 2022., 2022
Abstract The Devonian was a time of drastic environmental change that shaped the morphology of trilobites. This study aims to investigate their morphological evolution and to show the influence of some abiotic and biotic factors (bathymetry, feeding habits and visual abilities) on their shape.
Valentin Bault, Catherine Crônier, Claude Monnet, Javier Álvaro   +3 more
wiley   +1 more source

The role of sea-level change and marine anoxia in the Frasnian-Famennian (Late Devonian) mass extinction [PDF]

, 2008
Johnson et al. (Johnson, J.G., Klapper, G., Sandberg, C.A., 1985. Devonian eustatic fluctuations in Euramerica. Geological Society of America Bulletin 96, 567–587) proposed one of the first explicit links between marine anoxia, transgression and mass ...
Algeo, Algeo, Averbuch, Becker, Becker, Becker, Becker, Belka, Bond, Bond, Bond, Bond, Bratton, Brett, Buggisch, Buggisch, Casier, Casier, Casier, Casier, Chen, Chen, Chen, Chow, Copper, Copper, Copper, Crick, David P.G. Bond, Filer, Geldsetzer, Geldsetzer, Girard, Goddéris, Goodfellow, Hallam, Hallam, Holmes, House, Joachimski, Joachimski, Joachimski, Johnson, Johnson, Kennard, Klapper, Levman, Matyja, Morrow, Muchez, Newell, Orchard, Over, Over, Paproth, Paul B. Wignall, Playford, Playford, Playford, Pujol, Racki, Racki, Racki, Racki, Riquier, Sandberg, Sandberg, Sandberg, Sandberg, Sandberg, Sandberg, Schindler, Southgate, Stephens, Streel, Szulczewski, Szulczewski, Tribovillard, Walliser, Wang, Wignall, Wignall, Ziegler   +82 more
core   +1 more source

Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard shelf carbonate system, Canning Basin, Western Australia [PDF]

, 2015
Here we report four high-resolution carbon isotope records in addition to trace element data for the Frasnian–Famennian (F–F) boundary interval in the Lennard Shelf carbonate system of the Canning Basin, Western Australia.
Caulfield-Kerney, Samuel, Haines, Peter, Hillbun, Kelly, Hocking, Rger, Katz, David, Montgomery, Paul, Playton, Ted E., Ratcliffe, Ken, Roelofs, Brett, Tohver, Eric, Trinajstic, Kate, Ward, Peter, Wray, David   +12 more
core   +1 more source

UPPER FRASNIAN (UPPER DEVONIAN) BRYOZOANS IN PROXIMAL FACIES OF SOUTHERN BELGIUM

Rivista Italiana di Paleontologia e Stratigrafia, 2015
Seven bryozoan species are described from the shallow-water Aisemont and Lambermont formations (upper rhenana Conodont zone, upper Frasnian) in southern Belgium. The studied interval is situated between the lower and upper Kellwasser events.
ANDREJ ERNST, ZOYA TOLOKONNIKOVA, JULIEN DENAYER   +2 more
doaj   +1 more source

Late Devonian (Famennian) jaws: the icriodid multielement apparatus and its function [PDF]

, 2001
In this study the conodont multielement apparatus of Late Devonian (Famennian) Icriodus altematus is described which has been reconstructed from clustered group findings and separated elements.
Schülke, Immo
core   +2 more sources

Nonparametric estimation of age–depth models from sedimentological and stratigraphic information [PDF]

Geochronology
Age–depth models are fundamental tools used in all geohistorical disciplines. They assign stratigraphic positions to ages (e.g., in drill cores or outcrops), which is necessary to estimate rates of past environmental change and establish timing of events
N. Hohmann, D. De Vleeschouwer, S. Batenburg, S. Batenburg, E. Jarochowska   +4 more
doaj   +1 more source

Gamma-ray spectrometry across the Upper Devonian basin succession at Kowala in the Holy Cross Mountains (Poland) [PDF]

, 2003
The Upper Devonian sequence at Kowala in the Holy Cross Mountains was logged using gamma-ray spectrometry, for investigating the changes of oxygenation level in the Late Devonian basin.
Bond, D.P.G., Zaton, M.
core   +2 more sources

The World's Highest-Grade Cobalt Mineralization at Bou Azzer Associated With Gondwana Supercontinent Breakup, Serpentinite and Kellwasser Hydrocarbon Source Rocks [PDF]

, 2023
Cobalt arsenide deposits associated with Neoproterozoic serpentinite in Morocco represent the highest-grade cobalt resource worldwide. Yet, genetic models for their origin remain controversial.
Allaz, J. M., Bernasconi, S. M., Creaser, R. A., Ikenne, M., Karfal, A., Maacha, L., Saintilan, N. J., Souhassou, M., Spangenberg, J. E., Toma, J.   +9 more
core   +1 more source

Insight into tube-building behaviour and palaeoecology of some agglutinating worms from the Upper Devonian of Nevada, USA [PDF]

, 2015
Agglutinated worm tubes from the Upper Devonian of the Devils Gate section in Nevada, USA are reported for the first time, filling a major gap in their Palaeozoic fossil record.
Bond, David P. G., Zatoń, Michał
core   +1 more source

Revision of the Late Devonian ptyctodonts (Vertebrata, Placodermi) from southern Poland [PDF]

Estonian Journal of Earth Sciences
New studies on Frasnian ptyctodonts, including the revision of historic material in addition to the description of new material, have resulted in the detailed description of two species of Ptyctodus (Ptyctodus obliquus, Ptyctodus kielcensis), eight ...
Katarzyna Grygorczyk, Olga Wilk, Piotr Szrek   +2 more
doaj   +1 more source