Alright! Now we can really start diving in. Would the gaps between vertebrae get larger at the base of the neck compared to the base of the skull? I'd imagine those thick bones could pose a problem for a guillotine blade.
Wasn't there a significantly higher concentration of oxygen 65 million years ago or something? That might make it easier for big things to get enough oxygen for aerobic processes.
I don't know shit about fuck with chemistry and biology it just sounds right