[medved]

We know that dinosaurs moved; they were vertebrates, and we have their trackways (sequences of footprints) preserved in certain sediments as fossils. One popular question is how fast did they move? Did some of them run as fast as the modern cheetah? Most scientists involved in the investigation of dinosaur locomotion think not. We have several lines of evidence that can help us estimate how dinosaurs could move.

I hate to keep harping on this one, but you have to consider gravity in any such line of reasoning. It is a very simple demonstration that there is a roughly 20,000 lb. limit for land animals in our present world; anything heavier than that would be unable to stand or walk at all.

[RoughDobermann]

I hate to keep harping on this one, but you have to consider gravity in any such line of reasoning. It is a very simple demonstration that there is a roughly 20,000 lb. limit for land animals in our present world; anything heavier than that would be unable to stand or walk at all.

Are you saying that gravity exerted less influence in the Cretaceous than it does today? If so, I wasn't aware of that. Titanosaurus weighed in at approximately 14,700 kg...

[null and void]

Titanosaurus weighed in at approximately 14,700 kg...

Thats over 32,000 pounds...

[strela]

It is a very simple demonstration that there is a roughly 20,000 lb. limit for land animals in our present world; anything heavier than that would be unable to stand or walk at all.

Then how do you account for ...

[TigerLikesRooster]

RE #30

Is it possible that these T-Rex lived in the water just like crocodiles or hippos, partially submerged in the water. This way, water can support T-Rex's weight, and T-Rex can get around using less powerful legs. Is there any reason believe that T-Rex is only a dry land creature ?