Stegosaur request

[Bill Adlam <bill.adlam@st-peters.oxford.ac.uk>]

On Saturday, James Shields wrote:

> I think we have a better picture of "Spiky" stegosaurs such as Kentrosaurus.
> All the reconstructions I've seen show two rows of spikes (does anyone know
> the reason for this? Are the spines more firmly attached). This is possibly
> the reasonigy behind reconstructions of Stegosaurus with two rows of plates.

I really would like a reference or two for Kentrosaurus, so I can sort out in
my mind their possible mating behaviour.  I'll report my conclusions to the 
list, of course.
                                                                   Bill Adlam