'The atmosphere of the Earth 80 million years ago was discovered to have 50% more oxygen than modern air. Brenner and Landis found that for all gas samples taken from amber 80 million years old the oxygen content ranged between 25% to 35% and averaged about 30% oxygen. Cretaceous air was supercharged with oxygen.'
This implies vigorous plant growth to feed the beasts and hyper-active feeding and body-building. The smart money was on speed to out-run the explosive bush-fires.

The Chinese raptors has prompted a discovery of maga-raptors in Montana US. Rex 'Dino' Clawman, a twinkly eyed, chuckling lizard-scientist has turned up the great American raptor. At 39m. height with 3.6m. long slashers, it ripped any Chinese chook into shredded feathers and land fill. 'These guys stood tall for all Americans and the flag in which we sail. Bless them' he sang with tears.

All the decaying organisms in oil were bubbling up with methane, producing a rich high-octane fuel ratio for turbo charged pterodactyls (Mk I- III, patented). The raptors had rooster fights where they accelerated to 180kmh on the runway and collided. This was banned due to concussion injuries.