how to tell if my neighbors are raptors
gentilmente offerto da escapingravity <3
che bello che tutti pensano a me quando vedono qualcosa sui dinosauri e/o evoluzione
streamsofmoonlight: harlowville: fortunefavours: (via zachisaac)
“Nothing in biology make sense except in the light of evolution” - Theodorius Dobzhansky
freshphotons: madeofstarstuff: altergrin: dan mccarthy the biography of a carbon atom
![Lungs with one-way air flow may have helped dinosaurs’ ancestors become dominant when oxygen levels dropped after the Permian-Triassic extinction. It was a period around 250 million years ago when most land-based life died off. [..] In turn, this lung structure may have enabled the common ancestors of dinosaurs and modern-day birds and alligators, the archosaurs, to thrive when oxygen levels dropped and killed off most other animals.
(via http://www.wired.com/wiredscience/2010/01/alligator-lungs/)](http://24.media.tumblr.com/tumblr_kwk5clyMLg1qzizlko1_500.jpg)
Lungs with one-way air flow may have helped dinosaurs’ ancestors become dominant when oxygen levels dropped after the Permian-Triassic extinction. It was a period around 250 million years ago when most land-based life died off. [..]
In turn, this lung structure may have enabled the common ancestors of dinosaurs and modern-day birds and alligators, the archosaurs, to thrive when oxygen levels dropped and killed off most other animals.
(via http://www.wired.com/wiredscience/2010/01/alligator-lungs/)
