Maybe it depends where you would cut a human head of? In either way here is the skeleton of a Argentinosaurus:
I do believe that Argentinosaurus has cancer between the 23rd and 24th vertebrae. They might want a second opinion.
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.
That looks like a way too small heart for such a huge body. It looks only about 3-4 times bigger than human heart
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
this is a much better skeleton of Argentinosaurus