It was initially believed that this innovation leads to a largely flexible neck and a relatively short and sturdy body .
Of the 66 presacral vertebrae in Muraenosaurus , 44 of them are cervical .
Muraenosaurus was initially believed that this innovation leads to a largely flexible neck and a relatively short and sturdy body .
Of the 66 presacral vertebrae in Muraenosaurus , 44 of them are cervical .