[SunkenCiv]

Quetzalcoatlus demonstrates the so-called "quad launch" in this illustration. [Mark Witton]

[GeronL]

bump

my nephew just brought home a really big book of dee-nosaurs, I’m going to take a peek for the Quezo-chezy coated one

[E. Pluribus Unum]

Bees can’t fly either.

[Kirkwood]

Bumblebees can’t fly either.

[null and void]

I wonder if they are assuming 14.7 psi as one atmosphere?

I’m also wondering what percentage of the atmosphere and hydrosphere would be permanently blasted into space if you abruptly opened a 120 mile wide crater down to magma at a shallow ocean margin?

Seems to me that would create a superheated seawater steam jet that would rocket into space for days if not weeks.

The net pressure and available atmospheric oxygen before Chicxulub might well have been significantly higher.

[wideminded]

I’ve heard that one reason dinosaurs could be of such a large size is that there used to be more oxygen in the atmosphere. I wonder if it is known whether there was also higher surface air pressure.

[afraidfortherepublic]

I fully understand. I have the same problem.

[bunkerhill7]

Canadian geese are falling all over my front lawn.

[Freedom_Is_Not_Free]

And not a single word about the thicker, more dense air that existed during the epochs of the dinosaurs.

Denser air would displace more weight given the same area. It would apply more upward pressure for any wing area and velocity.

I see nothing mentioned that the air was much more dense in the hotter climates when these animals flew.

The analysis appears flawed.

[PIF]

And then there is this:

The Paradox of Large Dinosaurs
Applying Science to Understanding Large Dinosaurs

http://dinosaurtheory.com/big_dinosaur.html