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Keyword: paleocene

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  • Ancient Warming Shrunk Horses to Housecat Size

    02/23/2012 11:33:29 AM PST · by Free ThinkerNY · 67 replies
    Yahoo/LiveScience.com ^ | Feb. 23, 2012 | Stephanie Pappas
    An ancient global warming event shrunk the earliest horses down to the size of scrawny housecats, according to new research that could have implications for what mammals might look like in a future warming world. During what's known as the Paleocene-Eocene Thermal Maximum, or PETM, about 56 million years ago, a massive release of carbon into the atmosphere and oceans boosted average global temperatures by about 10 degrees Fahrenheit (5.5 degrees Celsius) over 175,000 years. Mammals responded to this climate change by shrinking, with about one-third of species getting smaller. Now, new research reveals that these changes occurred in lockstep...
  • They didn't mess with ancient turtle the size of a car

    05/19/2012 8:12:59 AM PDT · by Renfield · 10 replies
    MSNBC ^ | 5-17-2012 | Jeanna Bryner
    A turtle the size of a small car once roamed what is now South America 60 million years ago, suggests its fossilized remains. Discovered in a coal mine in Colombia in 2005, the turtle was given the name Carbonemys cofrinii, which means "coal turtle." It wasn't until now that the turtle was examined and described in a scientific journal; the findings are detailed online Thursday in the Journal of Systematic Paleontology. The researchers say C. cofrinii belongs to a group of side-necked turtles known as pelomedusoides. The turtle's skull, roughly the size of an NFL football, was the most complete...
  • Global Warming Can Trigger Extreme Ocean, Climate Changes

    01/18/2006 10:18:38 AM PST · by cogitator · 16 replies · 364+ views
    SpaceRef ^ | 01/15/2006 | National Science Foundation
    Scientists use deep ocean historical records to find an abrupt ocean circulation reversalNewly published research results provide evidence that global climate change may have quickly disrupted ocean processes and lead to drastic shifts in environments around the world. Although the events described unfolded millions of years ago and spanned thousands of years, the researchers, affiliated with the Scripps Institution of Oceanography, say they provide one of the few historical analogs for warming-induced changes in the large-scale sea circulation, and thus may help to illuminate the potential long-term impacts of today's climate warming. Writing in this week's issue of the journal...
  • Paleocene dinosaurs and the reinforcement syndrome (Creation vs. Evolution)

    11/24/2005 8:36:05 PM PST · by DaveLoneRanger · 15 replies · 1,013+ views
    Answers in Genesis ^ | Michael J. Oard
    Paleocene dinosaurs and the reinforcement syndrome by Michael J. Oard Evolutionary scientists have proclaimed for years that the dinosaurs died out at the end of the Cretaceous, exactly 65 million years ago. This date has been considered one of the evolutionary facts of nature. Since dinosaur fossils have been unearthed on all continents, the timing suggests a global change in the environment, or catastrophe. The extinction of the dinosaurs is a great mystery of paleontology, and there have been dozens of hypotheses for its cause.1 During the past two decades, however, most scientists have come to believe the extinction was...