Nice bit of synchronicity, I was just reading this again today:
The Impossible Dinosaurs - Megafauna and Attenuated Gravity
Kronia.com ^ | Ted Holden
Posted on 03/21/2008 2:01:20 AM PDT by Swordmaker
It is a fairly easy demonstration that nothing any larger than the largest elephants could live in our world today, and that the largest dinosaurs survived ONLY because the nature of the world and of the solar system was then such that they did not experience gravity as we do at all; they’d be crushed by their own weight, collapse in a heap, and suffocate within minutes were they to.
http://www.freerepublic.com/focus/chat/1989265/posts
The most damning single thing in that indictment is the thing about what happens if a sauropod dinosaur holds his neck outwards roughly horizontally, i.e. the thing about having to hold something like 500,000 - 1,000,000 foot pounds of torque with muscle and sinew...