For those big dinosaurs to walk, the earth would have had to had days of (guessing wildly) five to ten hours, and this would have had to have been the case 65 million years ago, when the biggest dinosaurs lived.
Note that a day of 100 minutes would put objects on the surface of the earth at close to escape velocity. That 100 minutes is the approximate time it takes a low earth satellite to orbit.
just as the massive dino’s existed, so did the nautiloids, all the rest is theory and conjecture...the dating itself is nothing but guesswork, IMO.
Galileo’s last words, after he recanted...’and yet it moves’, remember?
The evidence is there. Something was different. Although I do not doubt there are many who would prefer the evidence did NOT exist...
AND YET IT IS THERE!