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Results 51 - 61 of 61.

Paleontology - Physics - 15.08.2017
Unique imaging of a dinosaur's skull tells evolutionary tale
Unique imaging of a dinosaur’s skull tells evolutionary tale
Researchers have exposed the inner structures of the fossil skull of a 74-million-year-old tyrannosauroid dinosaur nicknamed the Bisti Beast. Collaboration creates highest-resolution scan of a large tyrannosaur skull LOS ALAMOS, N.M., Aug. 15, 2017-Researchers using Los Alamos' unique neutron-imaging and high-energy X-ray capabilities have exposed the inner structures of the fossil skull of a 74-million-year-old tyrannosauroid dinosaur nicknamed the Bisti Beast in the highest-resolution scan of tyrannosaur skull ever done.

Paleontology - Life Sciences - 26.07.2017
Large-Mouthed Fish Was Top Predator After Mass Extinction
Possible look of the newly discovered predatory fish species Birgeria americana with the fossil oft he skull shown at bottom right (Artwork: Nadine B÷sch) The most catastrophic mass extinction on Earth took place about 252 million years ago - at the boundary between the Permian and Triassic geological periods.

Paleontology - Life Sciences - 20.07.2017
Our ancestors were already warm-blooded just before the Permian-Triassic extinction event
For how long have warm-blooded animals existed? The time at which this character first appeared in the ancestors of mammals has long been debated.

Life Sciences - Paleontology - 28.06.2017
18O-derived incubation temperatures of oviraptorosaur eggs
In order to determine the incubation temperature of eggs laid by non-avian dinosaurs, we analysed the oxygen isotope compositions of both eggshell carbonate ('18Oc) and embryo bone phosphate ('18Op) from seven oviraptorosaur eggs with preserved in ovo embryo bones.

Life Sciences - Paleontology - 23.09.2016
Synchrotron imaging of dentition provides insights into the biology of the "last" toothed birds
The dentitions of extinct organisms can provide pivotal information regarding their phylogenetic position, as well as paleobiology, diet, development, and growth.

Life Sciences - Paleontology - 09.08.2016
Origin of the turtle shell lies in digging
Origin of the turtle shell lies in digging
In today's turtles the shell has a key protective function. The animals can withdraw into it and protect themselves against predators. No other group of vertebrates has modified its physique to such an extent to develop an impenetrable protective structure. "For a long time, paleontologists and developmental biologists puzzled over the origin of the tortoise shell," explains Torsten Scheyer, a paleontologist at the University of Zurich.

Paleontology - 24.08.2015
Aquatic plant may be oldest known flower
An international research team (1) led by a researcher from the Lyon Laboratory of Geology - Earth, Planets, Environment (CNRS, UniversitÚ Claude Bernard Lyon 1, Ecole normale supÚrieure de Lyon) rec

Paleontology - Life Sciences - 21.08.2014
Jurassic Welsh mammals were picky eaters, study finds
Media Releases Research Using Synchrotron Light New analyses of tiny fossil mammals from South Wales are shedding light on the function and diets of our earliest ancestors, a team led by researchers from the Universities of Bristol and Leicester report . The team used CT scanning with synchrotron X-rays at PSI's Swiss Light Source to reveal in unprecedented detail the internal anatomy of the mammals' tiny jaws.

Life Sciences - Paleontology - 18.08.2011
Getting inside the mind (and up the nose) of our ancient ancestors
Getting inside the mind (and up the nose) of our ancient ancestors
Reorganisation of the brain and sense organs could be the key to the evolutionary success of vertebrates, one of the great puzzles in evolutionary biology, according to a paper by an international team of researchers, published today in Nature.