sauropods held their long necks straight out!??! http://news.nationalgeographic.com/news/2009/05/090514-dinosaurs-long-necks.html What a joke! Dinosaurs couldn't possibly have pumped blood up those long necks, so they must have held them horizontal?!?!? Hold your arm out for five minutes. Now imagine its 30 feet long. Something was very different in the prehistoric environment, which allowed for 8 foot long scorpions to get oxygen to their innards, pterosaurs to fly, T-rexes to run, and sauropods to get blood up to their brains. I just don't know what. It's a physics mystery.