Sentences with phrase «ancient organisms»

One «must» for all four ExoMars sites was clay: fine - grained sediment that, on Earth, is deposited by water and is excellent at preserving the remains of ancient organisms.
Palaeontologists can decipher how ancient organisms lived and interacted using taphonomy, the study of how fossils form.
This evidence is also difficult to interpret because it requires (1) sequences of sediments covering a long period of time, over a wide range of latitudes and which are easily correlated; (2) ancient organisms which survive for several million years without change and whose temperature preferences are easily diagnosed; and (3) the finding of the relevant fossils, which requires a lot of luck.
paleontologist A scientist who specializes in studying fossils, the remains of ancient organisms.
«Jellyfishes are ancient organisms, which use a primitive predation mechanism based on generating feeding currents to bring the prey into contact with their bodies,» Acuña explains.
Biologists have discovered extremophiles — microorganisms living in extremes of heat, cold, radiation, and pressure — and ancient organisms that derive their energy from chemosynthesis instead of photosynthesis.
One skeleton from Denmark (Jorgen 625) showed extraordinary preservation of the pathogen DNA, allowing a genome reconstruction without using a modern reference sequence, which was never done before for an ancient organism's genome.
«We now have important information about the behavior of these ancient organisms, and a clue as to why they had such a wide geographic distribution,» Ausich said.
A helpful smattering of black - and - white photographs lets you see the traces of the ancient organisms for yourself.
However, some vestiges of ancient organisms might be preserved in mineral deposits that trapped organic material as they precipitated out of evaporating water.
Evidence shows that these ancient organisms were behaviorally sophisticated, tailoring their attacks for effectiveness.
Today these ancient organisms have been pushed into obscure niches where oxygen does not penetrate.
These ancient organisms — and their «extremophile» descendants today — thrived in the absence of oxygen, relying on sulfate for their energy needs.
These are well - known toxins that cause morphologic abnormalities in modern aquatic organisms; which led the authors to conclude that metal poisoning caused the malformation observed in these ancient organisms and may have contributed to their extinction and that of many other species.
As a paleontologist at the South Australian Museum and the University of Adelaide, he studies the fossil remains of ancient organisms.
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