re:tail dragging( was cheek pouches)

["Cunningham, Betty" <bcunning@nssi.com>]

>At the Clayton, New Mexico trackway there is plain and clear evidence that 
>at some times dinosaurs did indeed drag their tails. While this behavior may 
>not have been common it happened from time to time. I have photographic 
>proof. At this same site there is a set of tracks that seem to indicate a 
>shuffling "dance" by an indecisive dino, and in close association there is 
>therapod traces. If one were to speculate, or let your imagination run wild, 
>one might "see" a harosaur trying to figure out which way to run to try to 
>lose a persuing T-rex. If that were the case then the tail might have been 
>used for extra support during an abupt stop and turn. This extra "foot" 
>would come in handy for a mainly bipedal creature, would it not? Since the 
>trackway was a swampy mudflat, when the tracks were laid down, there would 
>be little chance of damage to the hadrosaur's tail. Also, in the slippery 
>conditions of the mud a little extra traction a strong tail could provide 
>seems like a logical use of the tools evolved.
     
Are you sure this was a tail imprint and not a "baculae" imprint?
Perhaps the shuffling was due to that infamous little dance in front of a 
busy bathroom?
     
-Betty