Results 201 to 210 of about 4,012 (252)

Fossilization

open access: yes
Auf den ersten Blick sieht ›Fossilization‹ aus, als ob das Magnetband des Videos aus der Kassette entnommen, mehrfach zerknittert, dann wieder geglättet und zurück in die Kassette gespult wurde.
Néraudeau, Didier, Moreau, Jean‐david
exaly   +3 more sources

Experimental analysis of soft‐tissue fossilization: opening the black box [PDF]

open access: yesPalaeontology, 2018
Taphonomic experiments provide important insights into fossils that preserve the remains of decay-prone soft tissues – tissues that are usually degraded and lost prior to fossilization. These fossils are among the most scientifically valuable evidence of
Mark A Purnell   +2 more
exaly   +4 more sources

Are the oldest ?fossils?, fossils?

Origins of Life, 1976
A comparative statistical study has been carried out on populations of modern algae, of Precambrian algal microfossils, of the 'organized elements' of the Orgueil carbonaceous meteorite, and of the oldest microfossil-like objects now known (spheroidal bodies from the Fig Tree and Onverwacht Groups of the Swaziland Supergroup, South Africa).
openaire   +2 more sources

The fossil episode [PDF]

open access: possibleJournal of Monetary Economics, 2012
Abstract Agriculture sector output (biocarbon) is a good substitute for oil in energy production but oil cannot be used as food. This one-way substitutability is analyzed in a dynamic general equilibrium model. It features three endogenous phases: a pure fossil, a mixed fossil and biocarbon and an absorbing biocarbon fuel only phase.
John Hassler, Hans-Werner Sinn
openaire   +2 more sources

Fossils and fossilization

2015
The origin of fossils After an animal dies, its behavior immediately stops. Of course! Thus, behavior is the first component of the phenotype to be lost. After this, DNA and soft tissues are also rapidly lost. Large and small animals may eat or scavenge the carcass, dismembering the body, stripping away flesh, and breaking open bones that are rich in
openaire   +1 more source

Fossil spiders

Biological Reviews, 2010
Over the last three decades, the fossil record of spiders has increased from being previously biased towards Tertiary ambers and a few dubious earlier records, to one which reveals a much greater diversity in the Mesozoic, with many of the modern families present in that era, and with clearer evidence of the evolutionary history of the group.
Paul A, Selden, David, Penney
openaire   +2 more sources

The Fossil Fallacy

Scientific American, 2005
This article comments on the persistence of the creationism argument despite the multifarious evidence supporting evolution. Nineteenth-century English social scientist Herbert Spencer made this prescient observation: "Those who cavalierly reject the Theory of Evolution, as not adequately supported by facts, seem quite to forget that their own theory ...
openaire   +2 more sources

The lipids in fossils

Comparative Biochemistry and Physiology, 1967
Abstract 1. 1. Lipid components such as fatty acid esters, cholesterol esters, free fatty acids and phospholipids (phosphatidyl ethanolamine and lecithin) were found in well-preserved fossil bones of Pleistocene age. 2. 2. Half the older specimens (to Paleozoic) contained fatty acids and two still retained phosphatidyl ethanolamine. 3. 3.
S K, Das, A R, Doberenz, R W, Wyckoff
openaire   +2 more sources

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