When paleontologists put together a life history for a long-extinct animal, it’s common to infer the foods it ate by looking at modern animals with similar skull shapes and tooth patterns. But this practice is far from foolproof. New modeling and tests based on living species done at the American Museum of Natural History show […]
Posts Tagged ‘WFS’
Can skull shape and function determine what kind of food was on prehistoric plates?
May 12th, 2015
Riffin Explosive volcanoes fueled by water
May 9th, 2015
Riffin University of Oregon geologists have tapped water in surface rocks to show how magma forms deep underground and produces explosive volcanoes in the Cascade Range. “Water is a key player,” says Paul J. Wallace, a professor in the UO’s Department of Geological Sciences and coauthor of a paper in the May issue of Nature Geoscience. […]
Archaeornithura meemannae : a new bird fossil
May 6th, 2015
Riffin Scientists in China have described a new species of early bird, from two fossils with intact plumage dating to 130 million years ago. Based on the age of the surrounding rocks, this is the earliest known member of the clade that produced today’s birds: Ornithuromorpha.It pushes back the branching-out of this evolutionary group by at […]
Rupture along the Himalayan Front
May 4th, 2015
Riffin In their article for Lithosphere on 12 March, authors Kristin Morell and colleagues write, “The ∼700-km-long ‘central seismic gap’ is the most prominent segment of the Himalayan front not to have ruptured in a major earthquake during the last 200-500 years. This prolonged seismic quiescence has led to the proposition that this region, with a […]
Brachiopod shell shows sign of evolution
May 1st, 2015
Riffin Researchers of Ludwig-Maximilians-Universitaet (LMU) in Munich have carried out the first detailed study of the molecular mechanisms responsible for formation of the brachiopod shell. Comparison with shell synthesis in other groups reveals the deep evolutionary roots of the process. Brachiopods (lamp shells) are marine invertebrates, which were a highly successful and widespread group in the […]
‘platypus’ dinosaur: Vegetarian relative of T. rex
April 28th, 2015
Riffin Although closely related to the notorious carnivore Tyrannosaurus rex, a new lineage of dinosaur discovered in Chile is proving to be an evolutionary jigsaw puzzle, as it preferred to graze upon plants. Palaeontologists are referring to Chilesaurus diegosuarezi as a ‘platypus’ dinosaur because of its bizarre combination of characters that resemble different dinosaur groups. For […]
mammoths back to life !
April 25th, 2015
Riffin An international team of researchers has sequenced the nearly complete genome of two Siberian woolly mammoths — revealing the most complete picture to date — including new information about the species’ evolutionary history and the conditions that led to its mass extinction at the end of the Ice Age. “This discovery means that recreating extinct […]
Sexual Dimorphism in the Plated Dinosaur Stegosaurus
April 23rd, 2015
Riffin Abstract Conclusive evidence for sexual dimorphism in non-avian dinosaurs has been elusive. Here it is shown that dimorphism in the shape of the dermal plates of Stegosaurus mjosi (Upper Jurassic, western USA) does not result from non-sex-related individual, interspecific, or ontogenetic variation and is most likely a sexually dimorphic feature. One morph possessed wide, oval […]
Oldest fossils controversy resolved
April 22nd, 2015
Riffin New analysis of world-famous 3.46 billion-year-old rocks by researchers from the University of Bristol, the University of Oxford and UWA (the University of Western Australia) is set to finally resolve a long running evolutionary controversy. The new research, published this week in Proceedings of the National Academy of Sciences, shows that structures once thought to […]
WFS : Ariyalur Fossils : Rastellum Carinatum
April 16th, 2015
Riffin Rastellum (Arctostrea) carinatum (Lamarck) This upper Cretaceous oyster is characterized by long and curved valves. Stout ribs cross the upper valve. The sample is obtained from Ariyalur/Dalmiapuram area. samples collected by Riffin T Sajeev and Russel T Sajeev from World Fossil society. The Rastellum genus of oysters lived between 161 to 65 million years ago […]



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