[isrul]

How come, in the distant past, the planet could maintain very large life forms? at least one supposedly could even "fly". Then something happened that ended the possibility of such large animals existing. what allows something to grow so large other than a different gravity. What could account for different gravity other than a larger denser planet or close proximity of some large object in space?

I remember seeing an attempt to mechanically recreate a pterodactyl and make it fly. It just didn't work and the morons then simply asserted that the beast didn't fly but rather jumped out cliffs or out of trees.

[CarrotAndStick]

Some of my queries a long time ago...


You know, I’ve been having this funny idea that perhaps bones, during fossilisation, mineral absorption probably causes the distortion of the sizes of the bones, to greatly exaggerated forms.

For example, those ancient dragon-fly fossils with metre-wide wingspans, don’t seem too practical to be able to fly on membranous wings, leave alone the chances that they might break like twigs, when flapped.

What do you think?

 

http://www.freerepublic.com/focus/f-chat/1872549/posts?page=7#7

 

What if the fossils themselves are repeatedly being remineralised, with the most exposed parts getting more deposition than the corners and nooks, thus preserving shape?

Those dragonflies seem too delicate to be able to fly, for their size, lol!

 

http://www.freerepublic.com/focus/f-chat/1872549/posts?page=11#11

 

[crazyshrink]

One hypothesis noted on the History channels show “the creation of earth” postulated that the atmoshere was much richer in CO2 causing plants to more than flourish. Consequently, they went further by saying since the jungles could support it, the dinosaurs evolved.

Perhaps this difference in atmospheric density played a role in the flight of the pteradactyls(sp) and other flying dinosaurs. Just a guess on my part.

[Swordmaker]

From reading your comment I think you would be interested in my Electric Universe Ping List. I will ping you to one of the threads.