Re: Giant Scorpions and Dino Breath

[Bill Adlam <sagitta_elegans@yahoo.com>]

Ben Creisler wrote:

> The biological case for higher oxygen/thicker air seems
> easier to make for the Carboniferous.  Modern insects and
> other terrestrial arthropods appear to face a size limit
> based on their respiratory tract (a system of tubes or in
> some forms book lungs). 
I'm not at all convinced that either the tracheal system of insects and
myriapods or the gills or lungs and circulatory system of chelicerates
and crustaceans places an upper size limit.  Has this idea ever been
discussed in the literature?

Bill Adlam
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