Such reptiles , in fact , lived several million years before the first dinos emerged .
事实上，它们生活的年代要比第一种恐龙出现的年代还要早数百万年。
The researchers think those long tendons may have allowed the dinos to shift muscle mass from their necks onto their bodies-giving them a sort of " remote control " over their necks , while making the neck lighter and more flexible .
