Results 31 to 40 of about 496,670 (387)

Fossilized bioelectric wire – the trace fossil Trichichnus [PDF]

Biogeosciences, 2014
Abstract. The trace fossil Trichichnus is proposed as an indicator of fossil bioelectric bacterial activity at the oxic–anoxic interface zone of marine sediments. This fulfils the idea that such processes, commonly found in the modern realm, should be also present in the geological past.
Mariusz Kędzierski, Zbigniew Sawłowicz, Alfred Uchman, Antonino Briguglio, Antonino Briguglio   +4 more
openaire   +7 more sources

Museum of Natural Sciences: valuation of the paleontological collection of the State University of Ponta Grossa

Terr@ Plural, 2021
In the State University of Ponta Grossa is a reference institution in Paleontology in the State of Paraná, for being located on top of fossiliferous terrains of the Devonian and, mainly, by the tradition in research in this area since 1969.
Antonio Liccardo , Elvio Pinto Bosetti , Gilson Burigo Guimarães , Christopher Vinicius Santos , Drielli Peyerl   +4 more
doaj   +1 more source

RX J1548.9+0851, a fossil cluster? [PDF]

, 2012
Fossil galaxy groups are spatially extended X-ray sources with X-ray luminosities above L_X,bol > 10^42 h_50^-2 ergs s^-1 and a central elliptical galaxy dominating the optical, the second-brightest galaxy being at least 2 magnitudes fainter in the R ...
Adelman-McCarthy, Barnes, Biviano, Cypriano, Dariush, D’Onghia, Ebrová, Eigenthaler, Eigenthaler, Evrard, Firth, Girardi, Hartley, Hopkins, Horne, Jacoby, Jones, Khosroshahi, Khosroshahi, Khosroshahi, Koleva, Kurtz, Le Borgne, Mendes de Oliveira, Mendes de Oliveira, Miller, Mukai, Navarro, Osmond, P. Eigenthaler, Pierini, Ponman, Proctor, Prugniel, Ramella, Sales, Santos, Schirmer, Sodré, Springel, Sun, Tonry, Ulmer, Vikhlinin, Voges, W. W. Zeilinger, Wu, Yoshioka   +47 more
core   +1 more source

Reconstructing the past: methods and techniques for the digital restoration of fossils

Royal Society Open Science, 2016
During fossilization, the remains of extinct organisms are subjected to taphonomic and diagenetic processes. As a result, fossils show a variety of preservational artefacts, which can range from small breaks and cracks, disarticulation and fragmentation,
S. Lautenschlager
semanticscholar   +1 more source

From fossils to mind

Communications Biology, 2023
AbstractFossil endocasts record features of brains from the past: size, shape, vasculature, and gyrification. These data, alongside experimental and comparative evidence, are needed to resolve questions about brain energetics, cognitive specializations, and developmental plasticity.
de Sousa, Alexandra, Beaudet, Amélie, Calvey, Tanya, Bardo, Ameline, Benoit, Julien, Charvet, Christine, Dehay, Colette, Gómez-Robles, Aida, Gunz, Philipp, Heuer, Katja, van den Heuvel, Martijn, Hurst, Shawn, Lauters, Pascaline, Reed, Denné, Salagnon, Mathilde, Sherwood, Chet, Ströckens, Felix, Tawane, Mirriam, Todorov, Orlin, Toro, Roberto, Yongbin, Wei   +20 more
openaire   +11 more sources

Scientific collection of Paleontology and the communication ability of a blog about the discipline

Terr@ Plural, 2021
To enhance the teaching of Paleontology, due to the lack of tools to assist it in the undergraduate course in Geology at the Federal University of Uberlândia, Brazil, we developed a blog using the existing resources on a free online platform, as well as ...
Jonatas Rodrigues Tessari , Caio César Rangel , Daniel Sedorko, Fernanda Quaglio   +3 more
doaj   +1 more source

Age and metallicity gradients in fossil ellipticals [PDF]

, 2013
Fossil galaxy groups are speculated to be old and highly evolved systems of galaxies that formed early in the universe and had enough time to deplete their $L^{*}$ galaxies through successive mergers of member galaxies, building up one massive central ...
Eigenthaler, Paul, Zeilinger, Werner W.
core   +2 more sources

A Total-Evidence Approach to Dating with Fossils, Applied to the Early Radiation of the Hymenoptera

Systematic Biology, 2012
Phylogenies are usually dated by calibrating interior nodes against the fossil record. This relies on indirect methods that, in the worst case, misrepresent the fossil information. Here, we contrast such node dating with an approach that includes fossils
F. Ronquist, S. Klopfstein, L. Vilhelmsen, Susanne Schulmeister, Debra Murray, A. Rasnitsyn   +5 more
semanticscholar   +1 more source

Fossils upon Fossils [PDF]

Nature, 1967
Vertebrate Paleontology By Alfred Sherwood Romer. Third edition. Pp. viii + 468. (Chicago and London: University of Chicago Press, 1966.) $10; 72s.
openaire   +1 more source

Comment on “Bilaterian Burrows and Grazing Behavior at >585 Million Years Ago” [PDF]

, 2013
Pecoits et al. (Reports, 29 June 2012, p. 1693) describe bilaterian trace fossils and assign them an Ediacaran age based on the age of a granite interpreted as intrusive.
Beri, Angeles, Bettucci Sanchez, Leda, Bossi, Jorge, Gaucher, Claudio, Poire, Daniel Gustavo   +4 more
core   +2 more sources