Results 41 to 50 of about 496,670 (387)

Fossil Holothurians [PDF]

Science, 1912
n ...
openaire   +3 more sources

Fósseis: Mitos e Folclore [PDF]

Anuário do Instituto de Geociências, 2005
Fossils have been familiar objects to man since the prehistoric times, with striking connotations in the folklore of several cultures. They were used as decorative elements in necklaces, regarded as heroes or giants in the classical greek and roman ...
Antonio Carlos Sequeira Fernandes
doaj  

Investigating the cores of fossil systems with Chandra

, 2015
We investigate the cores of fossil galaxy groups and clusters (`fossil systems') using archival Chandra data for a sample of 17 fossil systems. We determined the cool-core fraction for fossils via three observable diagnostics, the central cooling time ...
Bharadwaj, V., Reiprich, T. H., Sanders, J. S., Schellenberger, G.   +3 more
core   +1 more source

Clustering Fossils from the Early Universe [PDF]

, 2012
Many inflationary theories introduce new scalar, vector, or tensor degrees of freedom that may then affect the generation of primordial density perturbations.
Jeong, Donghui, Kamionkowski, Marc
core   +2 more sources

Saiga fossils in the Southern-Lower Volga of Astrakhan, Russia [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2014
Conservation of declining migratory species is a challenging task, as the factors that may have determined their past distribution may not determine their extant and future distribution.
Golovachev Mikhail Vladimirovich, Lozovskaya Marina Viacheslavovna, Akbar Hossain, Matveev Andrey Viktorovich   +3 more
doaj  

The significance of Anomalocaris and other Radiodonta for understanding paleoecology and evolution during the Cambrian explosion

Frontiers in Earth Science, 2023
One of the most widespread and diverse animal groups of the Cambrian Explosion is a clade of stem lineage arthropods known as Radiodonta, which lived exclusively in the early Paleozoic.
Gaëtan J.-M. Potin, Allison C. Daley
doaj   +1 more source

Where are the Fossils of the First Galaxies? II. True Fossils, Ghost Halos, and the Missing Bright Satellites

, 2011
We use a new set of cold dark matter simulations of the local universe to investigate the distribution of fossils of primordial dwarf galaxies within, and around the Milky Way.
Abazajian, Barkana, Belokurov, Belokurov, Bovill, Bovill, Bozek, Brown, Brown, Brown, Bullock, Bullock, Ciardi, de Jong, Efstathiou, Frebel, Geha, Haiman, Irwin, Karachentsev, Karachentsev, Klypin, Knollmann, Koposov, Machacek, Maio, Martinez, Massimo Ricotti, McGaugh, McGaugh, Mia S. Bovill, Monelli, Moore, Naab, Norris, O’Shea, Peebles, Ricotti, Ricotti, Ricotti, Ricotti, Ricotti, Ricotti, Sand, Simon, Simon, Smith, Tinker, Tollerud, Trenti, Tully, Venkatesan, Walker, Walker, Walsh, Walsh, Whalen, Willman, Willman, Willman, Wise, Wise, Zentner, Zucker, Zucker   +64 more
core   +1 more source

Sections of Fossils [PDF]

Science, 1888
n ...
openaire   +4 more sources

High-energy synchrotron-radiation-based X-ray micro-tomography enables non-destructive and micro-scale palaeohistological assessment of macro-scale fossil dinosaur bones

Journal of Synchrotron Radiation, 2023
Palaeohistological analysis has numerous applications in understanding the palaeobiology of extinct dinosaurs. Recent developments of synchrotron-radiation-based X-ray micro-tomography (SXMT) have allowed the non-destructive assessment of ...
Takuya Imai, Soki Hattori, Kentaro Uesugi, Masato Hoshino   +3 more
doaj   +1 more source

The Mass Assembly of Fossil Groups of Galaxies in the Millennium Simulation

, 2007
The evolution of present-day fossil galaxy groups is studied in the Millennium Simulation. Using the corresponding Millennium gas simulation and semi-analytic galaxy catalogues, we select fossil groups at redshift zero according to the conventional ...
Dariush, Ali, Hartley, Will, Khosroshahi, Habib G., Pearce, Frazer, Ponman, Trevor J., Raychaudhury, Somak   +5 more
core   +1 more source