and is well aware that the chances of finding pterosaur bones are slim. they re much more fragile than dinosaur bones. as the oysters technology just set in its own good very thin wall with hardly any organic material inside them just the spongy tissue that was ninety percent but still when it was used over all weight and therefore increased its flight capability that in the he cut so very lightweight bones as a duck. here in the dinosaur museum in the mill tallinder varia the giant pterosaurs reconstructed skeleton goes on display for the first time. how exactly did these creatures move on the ground it s not known for sure but they probably got around on all fours with their wing membranes neatly folded up on this . it s also not clear how they managed to become airborne some