@edgarblythe,
evidence that all this dinosaur crap had gone on quite long enough. My"theory" which is mine alone and of which I therefore thought up so I can claim that it is entirely done by my own mind, is that this creature bounded around more like a kangaroo . The reason for the big stomach in the rendering is that the rib sections appeared expandable thus bringing up the theory that this critter could have filled up with a ventral pouch of methane which allowed it to bound around rather like a big beach ball.