Move for Larger Creatures

[sir_pudding]

Originally Posted by Flyndaran

How big of a monster do you want?
The largest land animal weighed over 100 tons, and had a huge tail to contend with.

Since all we know about Amphicoelias is from a single bone (and that subsequently lost) I don't think you can derive any meaningful estimate of it's top speed. Besides it most likely had legs and thus is a poor data point for giant worms anyway.

[Flyndaran]

Originally Posted by sir_pudding

Since all we know about Amphicoelias is from a single bone (and that subsequently lost) I don't think you can derive any meaningful estimate of it's top speed. Besides it most likely had legs and thus is a poor data point for giant worms anyway.

That has an estimate much greater. 100 tons is a conservative reasonable assertion for many of the giant sauropods.
But I give you the had legs point.

Slithering is just a horribly inefficient mode of locomotion no matter what your size. Even earthworms have numerous tiny moving hook-like structures to propel them through the dirt.