In before the "this is junk science" posts begin.
This is a cross section of a South Pole dinosaur bone. In the center of the bone marrow cavity are dirt and bone matrix. (Credit: Photo courtesy of Holly Woodward)
Posted on 08/12/2011 9:02:20 AM PDT by SunkenCiv
Dog-sized dinosaurs that lived near the South Pole, sometimes in the dark for months at a time, had bone tissue very similar to dinosaurs that lived everywhere on the planet, according to a doctoral candidate at Montana State University. That surprising fact falsifies a 13-year-old study and may help explain why dinosaurs were able to dominate the planet for 160 million years, said Holly Woodward, MSU graduate student in the Department of Earth Sciences and co-author of a paper published Aug. 3 in the journal PLoS ONE.
"If we were trying to find evidence of dinosaurs doing something much different physiologically, we would expect it to be found in dinosaurs from an extreme environment such as the South Pole," Woodward said. "But based on bone tissues, dinosaurs living within the Antarctic Circle were physiologically similar to dinosaurs living everywhere else.
"This tells us something very interesting; that basically from the very start, early dinosaurs, or even the ancestors of dinosaurs, evolved a physiology that allowed an entire group of animals to successfully exploit a multitude of environmental conditions for millions of years," Woodward said...
LAGSs, in a bone cross section, look like tree rings, Woodward said. Like tree rings, they are formed when growth temporarily stops.
"Research on animals living today suggests that LAGs form annually, regardless of latitude or climate," Woodward said. "Like tree rings, LAGs can be counted to age an animal, so that the absence of these marks likely indicates a dinosaur was less than a year old. These marks have also been found in dinosaurs that lived at much lower latitudes having no need to hibernate."
(Excerpt) Read more at sciencedaily.com ...
This is a cross section of a South Pole dinosaur bone. In the center of the bone marrow cavity are dirt and bone matrix. (Credit: Photo courtesy of Holly Woodward)
What this tells us is, dinosaurs lived at a time when the entire Earth was warmer and there were no polar icecaps.
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| GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach | |
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Thanks Renfield. |
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How long has the south pole been the south pole?
Does this mean that the theory about the earth twisting every once in a while so that the poles end up at the equator has been scrapped?
The article says, “All lived in the Antarctic Circle in what is now known as the Australian state of Victoria.” The bones weren’t found at the South Pole, but when they became bones they happened to be at the South Pole. :)
Thanks.
You see when the flood hit 5,500 years ago all that water over Antartica froze instantly killing off all the giant lizards God had placed there 500 years earlier.......
That is how the ice cap down there formed.
In 1839 Sir Paul Edmund de Strzelecki crossed the equator several times.
He was Polish.
Poles ending up at the equator is no theory, it is a fact.
I stand corrected, sir.
“That surprising fact falsifies a 13-year-old study” - hmmmmm.....falsifying.....”Let’s put a lifesaver candy in a bag and tell them it’s a dinosaur bone!”
I'm happy you were able to dig that out.
And media people wonder why the journalism trade is held in such low regard.
Holly Woodward or Hollywood ward?
[sighs] Okay, so, I’m a little jealous I didn’t think of that.
Under that model, continental drift / plate tectonics kicked in a mere 225 million years ago.
http://www.ucmp.berkeley.edu/geology/tectonics.html
There’s also True Polar Wander:
http://www.gps.caltech.edu/~jkirschvink/
And of course, Charles Hapgood’s crustal displacement (I won’t look for links, it’s probably depressing).
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