Posts Tagged ‘Riffin T Sajeev’

WFS News: Palaeocene–Eocene Thermal Maximum prolonged by fossil carbon oxidation

WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev  Palaeocene–Eocene Thermal Maximum prolonged by fossil carbon oxidation A rapid rise in temperature on ancient Earth triggered a climate response that may have prolonged the warming for many thousands of years, according to scientists. Their study, published online in Nature Geoscience, provides new evidence of a climate feedback that […]

WFS News: Eretmorhipis carrolldongi,Early Triassic marine reptile

@ WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev No animal alive today looks quite like a duckbilled platypus, but about 250 million years ago something very similar swam the shallow seas in what is now China, finding prey by touch with a cartilaginous bill. The newly discovered marine reptile Eretmorhipis carrolldongi from the lower Triassic period is […]

WFS News: T. rex fossil leads researchers to new species of shark

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev T. rex fossil leads researchers to new species of shark Scientists examining rock left over from the discovery of a fossilized Tyrannosaurus rex recently came across a surprise: shark teeth. The huge meat-eating dinosaur, the remains of which were extricated in the 1990s, was not killed by a shark. But, scientists said on […]

WFS News: World’s oldest fossil mushroom

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev CHAMPAIGN, Ill. — Roughly 115 million years ago, when the ancient supercontinent Gondwana was breaking apart, a mushroom fell into a river and began an improbable journey. Its ultimate fate as a mineralized fossil preserved in limestone in northeast Brazil makes it a scientific wonder, scientists report in […]

WFS News: Surface exposure dating with cosmogenic nuclides

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Surface exposure dating with cosmogenic nuclides  SUSAN IVY-OCHS & FLORIAN KOBER Eiszeitalter und Gegenwart Quaternary Science Journal,57/1–2,157–189,Hannover 2008 Abstract: In the last decades surface exposure dating using cosmogenic nuclides has emerged as a powerful tool in Quaternary geochronology and landscape evolution studies. Cosmogenic nuclides are produced in rocks and […]

WFS News: An unexpected noncarpellate epigynous flower from the Jurassic of China

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Despite the importance of, the great interest in and intensive effort spent on investigating angiosperms, a controversy remains as to when and how this group came into existence. Since the time of Darwin, some scholars have proposed that angiosperms existed before the Cretaceous (Smith et al., 2010; Clarke et […]

WFS News: Trilobite ancestral range in the southern hemisphere reconstructed

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev The first appearance of trilobites in the fossil record dates to 521 million years ago in the oceans of the Cambrian Period, when the continents were still inhospitable to most life forms. Few groups of animals adapted as successfully as trilobites, which were arthropods that lived on the […]

WFS News:The mysteries of a giant prehistoric marine reptile unlocked with the help of Medical scanner

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Descriptive anatomy of the largest known specimen of Protoichthyosaurus prostaxalis (Reptilia: Ichthyosauria) including computed tomography and digital reconstruction of a three-dimensional skull Ichthyosaurs were a highly successful group of predatory marine reptiles that appeared in the late Early Triassic and went extinct in the early Late Cretaceous (Fischer et al., […]

WFS News: Introduction to dating glacial sediments

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Many methods of dating glacial sediments As glacial geologists, some of the biggest questions that we’d like to answer are not only how large former ice sheets were, but also how fast did the recede and how quickly did they thin? This information is vital for numerical models, […]

WFS News: Tooth Loss Precedes the Origin of Baleen in Whales

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Rivaling the evolution of feathers in dinosaurs, one of the most extraordinary transformations in the history of life was the evolution of baleen — rows of flexible hair-like plates that blue whales, humpbacks and other marine mammals use to filter relatively tiny prey from gulps of ocean water. […]