The late Jurassic was a world-wide coniferous era
gigantic size is possible only via high concentrates of oxygenated blood
similar rich herbaceous conditions flourished on each continent
allowing for birth rates to rise above sustainable conditions
a final doubling of billions of numbers
could result in possible cataclysmic ecological collapse
one can see in the desertification of Africa
the rapid devastation of over-grazing
by goats and cattle
let alone 70 ton dinosaurs
I agree on the possibilities of a super-volcano scenario
and the meteor impact theory
simply adding a possible third
Like most things, MM is in fact half-right here. The atmosphere during the Age(s) of the Dinosaur was in fact completely different from the modern atmosphere. So, sorry, no Jurassic Park.
