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Posted on 12/04/2008 4:30:38 PM PST by decimon
Polar dinosaurs such as the 4.4-ton duckbill Edmontosaurus are thought by some paleontologists to have been champion migrators to avoid the cold, dark season. But a study now claims that most of these beasts preferred to stick closer to home despite potentially deadly winter weather.
While some polar dinosaurs may have migrated, their treks were much shorter than previously thought, University of Alberta researchers Phil Bell and Eric Snively conclude from a recent review of past research on the animals and their habitat. Polar dinosaurs include hadrosaurs, ceratopsians, tyrannosaurs, troodontids, hypsilophodontids, ankylosaurs, prosauropods, sauropods, ornithomimids and oviraptorosaurs.
(Excerpt) Read more at news.yahoo.com ...
Bluesaurus ping.
They had their time. Screw ‘em.
It’s a little known fact that the polar Edmontosaurus went extinct after its primary source of food, the Gretzkidactyl, migrated south to the Los Angeles area.
Here's what I do know... Many Dinosaurs were BIG. They simply meant they can tolerate temperature extremes very well. (see Ice Age mammals).
2nd of all, Dinosaurs were the most successful land animals ever... they reigned for 100 million years. I don't think I'd be too worried about Dinosaur migrating habits... (how much did this study cost the taxpayers?)
and third of all, you have no frame of reference because gravity had to be much less than what it is today. The most an land animal can weight today is what a mature African elephant weights. Any heavier and the Earth's gravity will be so much that you cannot even lift yourself off the ground. And many Dinosaurs were much heavier and bigger than the elephant. The elephants are so heavy... they don't gallop or run... they just do a fast shuffle. I don't think elephants can really climb which explains why they are only found in the flat lands...
My feeling is the the age of giantanism was only allowed by less gravity. And don't even get me started on Pangaea...
ping because of our earlier posts today
Canadian taxpayers. No idea of the cost.
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That sounds like something Ted Holden would write.
If you don't know who Ted Holden is, you better do some research before presenting his ideas as anything within a light year of reality.
Or, is this another of his aliases? He has been known to post here under close to a dozen different names, not all of which have yet been found by the moderators and banned.
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Thanks decimon. The pole hasn't always been in the same place. |
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Velikovsky and a few others might have a different opinion about how long polar winters were, way back then.
I thought the whole world was tropical in dinosaur days. We have fossil palm trees from Alaska, and fossil fig trees from Greenland, for a start.
10) When concluding that dinosaurs couldn't stand in 1 g, you decide:
a) Your assumptions about mass, weight and structure are wrong.
b) Saturn must have hung above the Earth's north pole, reducing the felt effect of gravity to 6% of what it is now.
I am now beholden to Ted Holden, for having to holden my sides from laughing!
Oh, please? This sounds interesting....
I hear those fossil fig cookies are *really* dry. :’)
If Pangea only broke up late, wouldn’t the land mass that is now Antarctica have been located a lot closer to the Equator?
How do we know that these were cold areas?
Cart before the horse syndrome, if you ask me.
Don't know who Ted Holden is... and tell me this... how come no land animal is bigger than the elephant? The only answer is gravity...
How much do you know about the Square Cube Law? Not much, I wager.
If there’s anything to any of that. :’)
Antarctica has fossils from at least one temperate species — one that would *not* survive there today — and (despite one attempt by some simpleton to “debunk” it) those fossils are under 3 million years old. That’s not enough time for the continent to shift enough. :’)
Enough to know that bumblebees can’t fly.
When theory conflicts with observation, look for a modification of the theory; apply Occam’s Razor; and rule out hypotheses that cause more problems than they solve.
Little Green Men; impossibly wild planetary movements; neutronium bones; waxing or waning gravity; internal phlogistan sacs: all fun, but they don’t describe reality.
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