User blog comment:Adsper/All Possible Mobs/@comment-173.77.134.229-20160819213328/@comment-25118285-20160820195348

Here's a concise answer about it: the quadruped spino study was so riddled with errors and heavily disputed ideas that the most accurate representation of Spinosaurus aegypticus is still the bipedal, Jurassic-Park-esque reconstruction. As such, we are leaving it bipedal (though still semi-aquatic).