At least 5 mass extinction events have profoundly changed the history of life on Earth. But a new study led by researchers at the University of Gothenburg shows that plants have been very resilient to those events. For over 400 million years, plants have played an essential role in almost all terrestrial environments and covered […]
Posts Tagged ‘Russel T Sajeev’
Penn-Dixie events in March 2015
March 4th, 2015
Riffin March 14, 2015 –8:30 AM, Penn Dixie Volunteer Training Program in the auditorium of the GatewayExecutive office, 3556 Lake Shore Road, Blasdell. Call (716) 627-4560 to make reservation. $30/person, Penn Dixie members are FREE. March 14, 2015 9 AM-2PM, Penn Dixie presentations at 10thAnniversary of Tech Savvy girls STEM Program March 18, 2015–7 PM, “Four […]
How were fossil tracks so well preserved?
March 1st, 2015
Riffin A type of vertebrate trace fossil gaining recognition in the field of paleontology is that made by various tetrapods (four-footed land-living vertebrates) as they traveled through water under buoyant or semibuoyant conditions. Called fossil “swim tracks,” they occur in high numbers in deposits from the Early Triassic, the Triassic being a geologic period (250 to […]
Kenyan fossils show evolution of hippos
February 26th, 2015
Riffin A French-Kenyan research team has just described a new fossil ancestor of today’s hippo family. This discovery bridges a gap in the fossil record separating these animals from their closest modern-day cousins, the cetaceans. It also shows that some 35 million years ago, the ancestors of hippos were among the first large mammals to colonize […]
Were dinosaurs destined to be big? Testing Cope’s rule
February 24th, 2015
Riffin In the evolutionary long run, small critters tend to evolve into bigger beasts — at least according to the idea attributed to paleontologist Edward Cope, now known as Cope’s Rule. Using the latest advanced statistical modeling methods, a new test of this rule as it applies dinosaurs shows that Cope was right — sometimes. “For […]
Eonatator coellensis: New marine fossil from Columbia
February 20th, 2015
Riffin A nearly complete fossil of a prehistoric marine reptile with preserved soft tissue has been found in central-western Colombia, at a spot several hundred miles from the Caribbean coast, a university in this capital said. Experts have given the reptile the name “Eonatator coellensis” because the find was made in a dry stream bed in […]
Life Possible On Earth 3.2 Billion Years Ago
February 17th, 2015
Riffin A spark from a lightning bolt, interstellar dust, or a subsea volcano could have triggered the very first life on Earth. But what happened next? Life can exist without oxygen, but without plentiful nitrogen to build genes — essential to viruses, bacteria and all other organisms — life on the early Earth would have been […]
Docofossor,Agilodocodon : mammal fossils discovered
February 15th, 2015
Riffin The fossils of two interrelated ancestral mammals, newly discovered in China, suggest that the wide-ranging ecological diversity of modern mammals had a precedent more than 160 million years ago. With claws for climbing and teeth adapted for a tree sap diet, Agilodocodon scansorius is the earliest-known tree-dwelling mammaliaform (long-extinct relatives of modern mammals). The other […]
Swimming reptiles make their mark in the Early Triassic
February 14th, 2015
Riffin Vertebrate tracks provide valuable information about animal behavior and environments. Swim tracks are a unique type of vertebrate track because they are produced underwater by buoyant trackmakers, and specific factors are required for their production and subsequent preservation. Early Triassic deposits contain the highest number of fossil swim track occurrences worldwide compared to other epochs, […]
15-million-year-old mollusk protein found
February 6th, 2015
Riffin A team of Carnegie scientists have found “beautifully preserved” 15 million-year-old thin protein sheets in fossil shells from southern Maryland. Their findings are published in the inaugural issue of Geochemical Perspectives Letters. The team–John Nance, John Armstrong, George Cody, Marilyn Fogel, and Robert Hazen–collected samples from Calvert Cliffs, along the shoreline of the Chesapeake Bay, […]



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