You say you have a prinstruder but no printed dinos?
FYI, given the size of the bottom layer these would probably come out better in PLA or in ABS with a heated platform. Sketchup files included for you to play with.
So, whip up a Printruder http://www.thingiverse.com/thing:958
And then a few dinos!
More about this design and other things at my site http://MakerBlock.com
Update 2010-03-10: Don't print these. I'm leaving them up in case someone wants to play with the designs. I'd suggest printing up Zaggo's replacement dinos here: http://www.thingiverse.com/thing:1912
Print one of each.