feathered dinos are just cooler

Naked looks like it belongs into water

exactly

it looks so much more peaceful too

dinos wherent murdering 24/7

Maybe not your fag dinos

But my macho dinos were

it looks like the sort of creature that would have offspring

and could actually heat them

I find the dino lung to be the best engineering feature

Unlike modern mammals the dinos had their lung in a rigid U shape with air valves

Their ribs were not mobile at the spine like ours

its as if during the last millions of years things have "evolved" but still maintain familiar characteristics of life on earth

Those big dinos did breathing with a gut/diaphragm only

air got in via one set of passages and escaped via secondary set

and it's not just completly different for the sake of it

Kinda like vents in the house

Some birds and small reptiles have that lung design in them

I bet if I bought you a feathered T-Rex plushie you'd love it

But small reptiles make no use of it (except turtles)
And birds evolved that feature even further into those lung sacks for breathing in high-speed wind

What I am trying to say is that dinos had literal turbo-lungs

They had to because of their size

Most if not all modern Reptiles are descended from Tetrapods

aka the reptilians that ruled the earth before the dinosaurs

but they aren't "related"

http://people.eku.edu/ritchisong/554images/Air_sacs_3.png

They have manual pumps in their wings

http://people.eku.edu/ritchisong/Airflowlungs1.gif

Aaaand recirculation rings

while Dinossaurs Evolved/Devolved (it's complicated) into Avians, Tetrapods remained mostly the same ever since the Permian Extinction Event

A human runner with a recirculation and arm-pump-sacks would be able to run much further

Our lungs are not very efficient at high intensity

actually that's not really important, if you manage to somehow keep pumping air into the human body, you wont stop.

short of muscle exhaustion

but otherwise a human in peak condition wouldnt stop if you pumped him with air straight to the lungs

Human lungs struggle to supply enough air when the demand is high

Bird lungs solved that one

which is something that's being worked on in the military

next generation body armour and advances into exoskeletons

https://svpow.files.wordpress.com/2013/04/schachner-et-al-2013-fig-13-full.png

crocodile/aligator lung on top