Results 41 to 50 of about 43,772 (223)

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

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

The Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman, Robert K. Carr, Kate Trinajstic, Zerina Johanson, Oleg A. Lebedev   +4 more
wiley   +1 more source

Engineering the Cambrian explosion: the earliest bioturbators as ecosystem engineers [PDF]

, 2017
By applying modern biological criteria to trace fossil types and assessing burrow morphology, complexity, depth, potential burrow function and the likelihood of bioirrigation, we assign ecosystem engineering impact (EEI) values to the key ichnotaxa in ...
Callow, Richard H. T., Callow, Richard H.T., Herringshaw, Liam G., McIlroy, Duncan   +3 more
core   +1 more source

Skeletal pathologies in extant crocodilians as a window into the paleopathology of fossil archosaurs

The Anatomical Record, EarlyView.
Abstract Crocodilians, together with birds, are the only extant relatives to many extinct archosaur groups, making them highly important for interpreting paleopathological conditions in a phylogenetic disease bracketing model. Despite this, comprehensive data on osteopathologies in crocodilians remain scarce.
Alexis Cornille, Kyla Beguesse, Ewan Wolff, Clemens Zinner, Patrick Asbach, François Clarac, Florian Witzmann   +6 more
wiley   +1 more source

Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives

Nature Communications, 2018
The effect of CO2 concentrations on 13C/12C ratios in C3 plants, comprising most of Earth’s vegetation, is currently debated. Here, using ice core records and plant and animal fossils, Hare et al.
Vincent J. Hare, Emma Loftus, Amy Jeffrey, Christopher Bronk Ramsey   +3 more
doaj   +1 more source

Planktonic foraminiferal turnover across the Cenomanian – Turonian boundary (OAE2) in the northeast of the Tethys realm, Kopet-Dagh Basin

Geologica Carpathica, 2016
Two Late Cenomanian – Early Turonian (C–T) intervals of the eastern part of the Kopet-Dagh basin, NE Iran have been investigated to evaluate the response of planktonic foraminifera to the geological event OAE2. The Gharesu and Taherabad sections with the
Kalanat Behnaz, Vahidinia Mohammad, Vaziri-Moghaddam Hossein, Mahmudy-Gharaie Mohamad Hossein   +3 more
doaj   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Palaeobiology, palaeoecology and stratigraphic significance of the Late Miocene cockle Lymnocardium soproniense from Lake Pannon

Geologica Carpathica, 2016
Stratigraphic subdivision of the Upper Miocene deposits in the Pannonian Basin has been traditionally based on the endemic mollusc species of Lake Pannon.
Magyar Imre, Cziczer István, Sztanó Orsolya, Dávid Árpád, Johnson Michael   +4 more
doaj   +1 more source

Suppressed competitive exclusion enabled the proliferation of Permian/Triassic boundary microbialites

The Depositional Record, 2020
During the earliest Triassic microbial mats flourished in the photic zones of marginal seas, generating widespread microbialites. It has been suggested that anoxic conditions in shallow marine environments, linked to the end‐Permian mass extinction ...
William J. Foster, Katrin Heindel, Sylvain Richoz, Jana Gliwa, Daniel J. Lehrmann, Aymon Baud, Tea Kolar‐Jurkovšek, Dunja Aljinović, Bogdan Jurkovšek, Dieter Korn, Rowan C. Martindale, Jörn Peckmann   +11 more
doaj   +1 more source

Reconciling diverse lacustrine and terrestrial system response to penultimate deglacial warming in southern Europe [PDF]

, 2015
Unlike the most recent deglaciation, the regional expression of climate changes during the penultimate deglaciation remains understudied, even though it led into a period of excess warmth with estimates of global average temperature 1–2 °C, and sea level
Frogley, Michael R, Hughes, Philip D, Reed, Jane M, Tzedakis, Polychronis C, Wilson, Graham P   +4 more
core   +3 more sources