Dinosaur find is no hollow feat

  • Article by: JOSEPHINE MARCOTTY , Star Tribune
  • Updated: November 30, 2011 - 6:12 AM

Macalester College paleontologist Kristi Curry Rogers drilled a hole in a 65-million-year-old dinosaur bone to help explain how dinosaurs survived.

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carlsonNov. 30, 11 9:53 AM

Isn't it more likely that, as in crocodiles, osteoderms were designed first and foremost for temperature regulation, but in time of famine when these amimals died they were depleted of minerals ahead of skeletal bones, hence their hollowness. By the way, I was cleaning a triceratops tibia a few years ago and when I got to the center I encountered a waxy substance. Is it possible that nonfossilized marrow could be present after 65mya?

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gopherguy79Nov. 30, 1110:57 AM

Hmmmmmmm, so you're saying that millions of years ago, there were "Extreme swings in weather and environment," interesting! I wonder what type of cars the dino's drove.

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petelnghNov. 30, 1111:06 AM

Nice try, carlson. First of all, there's no evidence that any biological structure was "designed". Second; the only possible soft tissue found in a dinosaur bone to date was from Tyrannosaurus rex, not triceratops. Whether it is actual preserved soft tissue is still open to debate. It may have been due to modern contamination by microbes that were able to thrive on the minerals accessed once the fossil in question was broken. BTW. If you reach the center of a fossil while cleaning it? You're doing it wrong.

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petelnghNov. 30, 1111:10 AM

Well, gopherguy79, no one has suggested that there have not been climate change incidents in the past. The current one just happens to be happening in direct proportion to the human emission of greenhouse gasses. The alarming part about climate change, past and present, is that it tends to cause mass extinction events. The scary part about mass extinctions is that the top of the food chain, humans in the present time, are often completely wiped out while more marginal organisms find a niche that allows them to survive.

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stego1962Nov. 30, 1111:44 AM

I think paleos should be focusing on the Stegosaurus.

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mylittleidNov. 30, 1112:05 PM

gopherguy79 - "I wonder what type of cars the dino's drove." There's an old cartoon called The Flintstones that you should watch. It will answer all your questions.

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GOODILLNov. 30, 11 1:25 PM

CLIMATE SWINGS!?! THATS NOT POSSIBLE, AL GORE SAYS THAT THE CLIMATE WAS STABLE AND EVEN UP UNTIL ABOUT 1969. IT JUST STARTED TO HAVE SWINGS AFTER MAN BEGAN DRIVING CARS. I HAVE SEEN MANY STORIES ABOUT CLIMATE SWINGS IN THE PAST BUT THOSE SCIENTISTS DO NOT KNOW WHAT THEY ARE TALKING ABOUT. I BELIEVE A POLITICIAN OVER A REAL SCIENTIST.

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petelnghNov. 30, 11 1:49 PM

I have generally found that people who feel a need to yell are ignorant, dishonest, or both. If one actually studies climate science, rather than listening to FOX and right-wing radio, one will find that scientists do not make a claim that the climate was stable before 1969. Indeed, there have been many fluctuations in the past and some of those were caused and/or worsened by greenhouse gases. The difference with the current, unprecedented, warming is that we are certain of the mechanism or, at least, as certain as one can be about something as complex as climate science. The problem is that we humans have introduced an unprecedented and ever increasing source of CO2 over and above all natural sources.

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carlbsNov. 30, 11 2:12 PM

It is clear that climates have changed throughout the geological record. Nobody disagrees with that. What is incredibly alarming with the current change is it's RAPIDITY. To put it nicely, you are not a smart person (duped by big oil money and their mouthpeices like Limbaugh) if you believe dumping billions of tons of carbon into a relatively closed system won't cause climate change. And it's no surprise that 3 of the hottest years in hundreds of years have happened in the last decade.

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carlsonNov. 30, 11 3:09 PM

peteIngh- I should have said functioned, not designed. I think marrow has been found in 10mya fossils if not older. I had access to the inside because I was reconstructing a bone that had fractured due to freeze/thaw of south dakota. Thanks for being a troll.

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