[nm_james]

CROC HUNTER TWO:

Okay, now who posted that claim of 32,400 psi just when walking?... Lets correct this simple math error.

The beast weighs 18,000 lbs.

Let us give it four feet, and each foot is one square foot in size !

Y'all with me so far? This assumed feet size is much smaller than the other posters claim.

Now, PSI is pounds force per square inch. So we have to convert this foot size over to square inches. So multiply it by 12 twice.

So each foot is 144 square inches.

So the Pressure exerted if the beastie stood on one of these 144 in2 feet would be only 125 PSI. Thats 18,000 lbs / 144 in2.

And the beastie is normaly on two feet, so that would reduce its pressure to 62 PSI.

By way of comparison, a man weighing 200 lbs with a 12" by 4" wide foot. The area of the foot is 48 in2. So if he is standing on one foot, then he would be exerting 4.1 PSI.

Now, to exert the same force as a man on the ground, this beastie would have to have a foot that is 4,320 square inches. Basically, the foot would need to be five and a half feet by five and a half feet. (or 30 square feet)

[wretchard]

With ground pressure like that, this croc would not be able to scramble up a muddy river bank very well. Maybe sand and shale, but not mud. This would limit its ability to hunt by lying in ambush for animal to come near a water source. But if the prey animals came to a shallow, sloping pool, this croc (given it's size) could never sneak up on it. Nor could it catch the prey if the animal scrambled up the bank.

Maybe this animal went extinct due to mobility problems.