Spinosaurus sail

[Oberon <oberon@box.com>]

Again: my drawing of the sail is rather schematic - giving the general 
(probable) shape. Nevertheless, the spines are not drawn as being straight. 
Actually, some of the spines of _Spinosaurus_ had even the slight "S" curve 
(not shown in the image).

In my opinion, the "sail" in Spinosaurus might have been similar in shape (seen 
from profile) to the sail of the Rauisuchian _Ctenosauruiscus_. 

A schematic drawing of _Ctenosauruiscus_:
 http://www.wort-und-wissen.de/sij/sij61-8.html

In _Spinosaurus_ the tallest spines were probably placed eccentric - closer to 
the back of the sail - to provide  the balance for the biped animal. 

It is interesting to note that the adult _Spinosaurus_ might have had the 
highest spines over 250 cm tall, provided that it had the similar proportions 
of the immature (holotype) specimen. It is possible that the adult had 
relatively taller spines (3 meters?). A speculation, until we get more new 
material...

Cheers!
Beri

Sincerely,\
Oberon

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