Sentences with phrase «trace fossils such»

Not exact matches

Scarcely any of the billions of living individuals have ever left their trace in an existing fossil, since the deposit of such a preserved fossil relies on very specific climatic / geological conditions to have occurred at the time of the organism's death.

It is only much later in the Jurassic and during the Cretaceous, which starts 145 million years ago, that truly large forms of theropods, such as T. rex, appear in body and trace fossil records.

«Compiling such a highly resolved food web was possible for the Messel because of the exquisite preservation of soft body parts and ecological traces in the deposit,» she says, «and because my co-author, Conrad Labandeira, is one of the world's foremost experts on fossil plant - insect interactions.»

«It may be that as we re-evaluate fossil evidence such as Kaim's plesiosaurs, we find traces of Osedax,» he says.

Additionally, Molecular fossils (or fingerprints) based on atom ratios in Archaean sediments is highly contencious, but scientifically critical, since such subtle molecular traces found in Australia has led to conjecture that microorganisms with nuclei appeared before 3.8 Ba.

Mykura contends that the allegation that 10 of the film's protagonists have been paid by fossil fuel companies or lobby groups funded by such companies «is a gross exaggeration that can be traced to blog gossip.»