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Old 08-22-2007, 09:46 PM   #1
baconeatingatheistjew
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How Is Dr. Dino Going To Explain This?

There is no way humans could outrun dinosaurs 6000 years ago


T. Rex Could Outrun Humans

By Jeanna Bryner, LiveScience Staff Writer

posted: 22 August 2007 08:43 am ET


Virtual races between prehistoric beasts reveal that one of the smallest carnivorous dinosaurs would have zipped past the lumbering Tyrannosaurus rex by a long shot. But even so, the "tyrant lizard king" was no slouch.

Turns out, T. rex could have outrun some of the buffest athletes.

“The figures we have produced are the best estimate to date as to how fast these prehistoric animals could run,” said Phil Manning, a paleontologist at the University of Manchester in England.

Manning and his Manchester colleague Bill Sellers, a biomechanics expert, used a supercomputer to calculate the top-running speeds of five meat-eating dinosaurs.

T. rex would just barely run past a professional soccer player (footballer) in a race, reaching an all-out speed of about 18 mph (8 meters per second), the results showed. However, chicken-sized bipedal competitor Compsognathus could whip around a race track at nearly 40 mph (18 m/s). That's 5 mph quicker than the computer's estimate for an ostrich, the fastest living animal on two legs.

Based on the computer simulations, here are the estimated race results:

* Compsognathus (6.6 pounds, 3 kilograms)—39.8 mph (17.8 m/s)
* Ostrich (144 pounds, 65.3 kg)—34.5 mph (15.4 m/s)
* Emu (60 pounds, 27.2 kg)—29.8 mph (13.3 m/s)
* Velociraptor (44 pounds, 20 kg)—24.2 mph (10.8 m/s)
* Dilophosaurus (948 pounds, 430 kg)—23.5 mph (10.5 m/s)
* Allosaurus (3,087 pounds, 1,400 kg)—21 mph (9.4 m/s)
* Tyrannosaurus (13,230 pounds, 6,000 kg)—17.9 mph (8 m/s)
* Human (157 pounds, 71 kg)—17.7 mph (7.9 m/s)

Game of survival

The new study downgrades T. rex's running speed somewhat from a previous estimate of 25 mph.

“While not incredibly fast, this carnivore [T. rex] was certainly capable of running and would have little difficulty in chasing down footballer David Beckham for instance,” Manning said.

But unlike soccer champs today who get sent off with applause (or in some cases, riots), prehistoric winners got their next meal while the losers lost their lives.

The running-speed results intrigue paleontologists interested in the predator-prey dynamics of the prehistoric beasts. "Chasing down prey is a vital factor in the lives of extant predators, as is the avoidance of being captured for prey animals," the scientists write in a report of their research to be published online tomorrow by the Proceedings of the Royal Society B.

Dinosaur gaits

The scientists say their calculations are the most accurate to date for dinosaur running speeds.

“Previous research has relied on data from extant bipedal models to provide clues as to how fast dinosaurs could run,” Sellers said. “Such calculations can accurately predict the top speed of a six-ton chicken, but dinosaurs are not built like chickens and nor do they run like them."

Sellers and Manning instead fed information about the skeletal and muscular structure of each animal, including the extinct dinosaurs, into a 256-processor supercomputer, which calculated the gait and posture needed for top-running speeds.

The computer spent up to a week mapping out the optimal biomechanics of each animal, ranging from clumsy putterer to smooth runner.
http://www.livescience.com/animals/0...ino_speed.html
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Old 08-23-2007, 02:23 AM   #2
Single Serving Jack
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Yeah but we all know that T-Rex would only have chased humans to steal their coconuts, right?

"I'd take the awe of understanding over the awe of ignorance any day" - Douglas Adams
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Old 08-23-2007, 05:18 AM   #3
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Adam didn't have to run faster than the T-Rex, he just had to run faster than Eve.

There. Easily explained.

And, um, god cloned her again later.

“Whoever attacks the popular falsehoods of his time will find that a lie defends itself by telling other lies.” - Robert Ingersoll
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Old 08-23-2007, 05:18 AM   #4
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Old 08-23-2007, 07:18 AM   #5
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baconeatingatheistjew wrote View Post
There is no way humans could outrun dinosaurs 6000 years ago
What if they ran through the briars, and they ran through the brambles, and they ran through the bushes where a rabbit couldn't go?
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Old 08-23-2007, 07:28 AM   #6
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Old 08-23-2007, 09:15 AM   #7
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It's Anansi! I love his folk tales.

Wait just a minute-You expect me to believe-That all this misbehaving-Grew from one enchanted tree? And helpless to fight it-We should all be satisfied-With this magical explanation-For why the living die-And why it's hard to be a decent human being - David Bazan
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Old 08-23-2007, 01:41 PM   #8
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I thought that was Brer Rabbit and the Tar Baby.
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Old 08-23-2007, 01:47 PM   #9
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4thgeneration wrote View Post
I thought that was Brer Rabbit and the Tar Baby.
Brer Rabbit stories are Americanized versions of old African Folk tales. The stories are generally the same, but it's a rabbit instead of a spider (and a lot of the stories that make into children's books have been toned down).

Wait just a minute-You expect me to believe-That all this misbehaving-Grew from one enchanted tree? And helpless to fight it-We should all be satisfied-With this magical explanation-For why the living die-And why it's hard to be a decent human being - David Bazan
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Old 08-23-2007, 05:56 PM   #10
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4thgeneration wrote View Post
I thought that was Brer Rabbit and the Tar Baby.
RACIST
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Old 08-23-2007, 06:35 PM   #11
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snap crafter wrote View Post
RACIST
I thought Br'er Rabbit and the Tar Baby were wrestlers, not racers.
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Old 08-23-2007, 06:49 PM   #12
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I thought Br'er Rabbit and the Tar Baby were wrestlers, not racers.
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Old 08-23-2007, 06:58 PM   #13
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Schweet! They gonna rassle next?
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