Results 21 to 30 of about 373,057 (342)
Exceptionally preserved fossils are the product of complex interplays of biological and geological processes including burial, autolysis and microbial decay, authigenic mineralization, diagenesis, metamorphism, and finally weathering and exhumation ...
L. Parry +9 more
semanticscholar +1 more source
How Technology Has Thrown Us Out of Balance with Nature and Why We Need to Get Back In
We have created a technology-based environment in an effort to control our world, but we need to understand that the biological forces that shaped us continue to play a role in our future. As more and more species go extinct because of human activity, we
Donald Johanson
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A Field Guide to Finding Fossils on Mars
The Martian surface is cold, dry, exposed to biologically harmful radiation and apparently barren today. Nevertheless, there is clear geological evidence for warmer, wetter intervals in the past that could have supported life at or near the surface. This
Sean McMahon +10 more
semanticscholar +1 more source
A Revised Phylogenetic Classification for Viola (Violaceae)
The genus Viola (Violaceae) is among the 40–50 largest genera among angiosperms, yet its taxonomy has not been revised for nearly a century. In the most recent revision, by Wilhelm Becker in 1925, the then-known 400 species were distributed among 14 ...
Thomas Marcussen +5 more
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Preservation of Arctic dinosaur remains from the Prince Creek Formation (Alaska, USA): A reply to Fiorillo (2016) [PDF]
We thank Anthony Fiorillo (2016) for the concerns he raised regarding our characterizations of the Liscomb bonebed fossils in our paper describing Ugrunaaluk kuukpikenis from the Prince Creek Formation of Alaska, USA (Mori et al. 2016). We did not
Hirotsugu Mori +2 more
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Congruence, fossils and the evolutionary tree of rodents and lagomorphs
Given an evolutionary process, we expect distinct categories of heritable data, sampled in ever larger amounts, to converge on a single tree of historical relationships.
R. Asher +3 more
semanticscholar +1 more source
Biologists would be mistaken if they relegated living fossils to paleontological inquiry or assumed that the concept is dead. It is now used to describe entities ranging from viruses to higher taxa, despite recent warnings of misleading inferences ...
S. Lidgard, A. Love
semanticscholar +1 more source
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 +20 more
openaire +11 more sources
A new fossil Lucanidae subfamily (Coleoptera) from the Mesozoic of China [PDF]
Litholamprima longimana Nikolajev et Ren, gen. et sp. n. of the family Lucanidae is described from the Lower Cretaceous Yixian Formation. Fossils were collected from Chaomidian Village, Liaoning Province, China.
G.V. Nikolajev, D. Ren
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The Messel Pit: Window into a Greenhouse World [PDF]
Anthropogenic climate change may result, within 200 years, in warm and equable climatic conditions not experienced on Earth for tens of millions of years. Ancient ecosystems under such “greenhouse” conditions may be seen as natural experiments, and their
Krister Smith
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