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anonymous

Greater India Before the Himalayas; Dinosaur Eating Snakes - 0 views

www.3quarksdaily.com/...the-dinosaur-eating-snake.html

earth science

shared by anonymous on 08 Mar 10 - Cached
  • Throughout most of the 545 million years during which there has been visible life on Earth (the Phanerozoic Eon), Greater India was not part of Asia, and it was not a peninsula.
  • Throughout most of the 545 million years during which there has been visible life on Earth (the Phanerozoic Eon), Greater India was not part of Asia, and it was not a peninsula.
  • Throughout most of the 545 million years during which there has been visible life on Earth (the Phanerozoic Eon), Greater India was not part of Asia, and it was not a peninsula.
  • ...4 more annotations...
  • Throughout most of the 545 million years during which there has been visible life on Earth (the Phanerozoic Eon), Greater India was not part of Asia, and it was not a peninsula.
  • Throughout most of the 545 million years during which there has been visible life on Earth (the Phanerozoic Eon), Greater India was not part of Asia, and it was not a peninsula.
  • Dinosaurs are one of the best groups for studying the potential effects of paleogeographic changes on evolution because dinosaurs were large animals that were capable of traversing continent scale-distances. For example, early in the Mesozoic Era, when the Earth's continental landmasses were connected, dinosaur faunas worldwide are generally similar. Carnivorous dinosaurs from North America, for example, bear striking resemblance to those from southern Africa, and herbivorous dinosaurs from China resemble those from South America. Later in the Mesozoic Era, however, this is not the case. Dinosaur faunas worldwide became more distinctive from one another due to evolutionary changes and extinction associated with increased isolation.
  • Snakes first appear in the fossil record 100 million years ago, but most Mesozoic snake fossils consist of isolated vertebrae—complete skeletons are extraordinarily rare and limited to a handful of specimens collected from Patagonia, the Levant, and southern Europe.
anonymous

Study: Massive Lava Flows Allowed Dinosaurs to Conquer the Planet - 0 views

blogs.discovermagazine.com/...inosaurs-to-conquer-the-planet

layscience lava study dinosaurs pangea

shared by anonymous on 24 Mar 10 - Cached
  • This week in the Proceedings of the National Academy of Sciences, paleontologists say they’ve studied the period about 200 million years ago when dinosaurs first came to power, and found that while catastrophic volcanic activity may not explain dinosaur extinction, it could have explained why dinosaurs’ competitors disappeared and the terrible lizards took over the planet.
  • The scientists examined how two different isotopes (or forms) of carbon fluctuated during these volcanic eruptions. They found that the “heavy” form of carbon was depleted relative to the “light” form. They say this reflects disturbances in the carbon cycle at this time, including a spike in atmospheric carbon dioxide (CO2) and aerosols (fine solid particles)
  • anonymous on 24 Mar 10
     
    From 80beats (Discover Magazine). Written by Andrew Moseman on March 24, 2010.
anonymous

Florida Tea Party hates manatees, declares them 'dangerous' - 0 views

offthebench.nbcsports.com/...natees-declares-them-dangerous

whimsy politics tea party

shared by anonymous on 29 Jul 11 - Cached
  • Although tea partier Mattos said she brings her grandchildren to see the manatees, she doesn’t see a point in the Save the Manatee Club. “If some of these environmental movements had been around in the days of the dinosaurs, we’d be living in Jurassic Park now,” she said. So, one is a fat, dull-witted, ponderous herd of creatures, and the other is the manatees. Got it.
    • anonymous
      anonymous on 29 Jul 11
       
      This quote is the single reason I had to share this with the bookmark group. What ASTOUNDING idiocy.
  • anonymous on 29 Jul 11
     
    And who can blame them? Look at this fearsome beast, floating Zeppelin-like in this lagoon, ready to slowly swim toward you and possibly nuzzle your face. "Help!" you gasp, and you crawl back into the boat, terrified. "I think he licked me!"
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