Ancient Mammal Relatives Were 'Night Owls'

[Still Waters]

Mammals were long thought to have evolved nocturnal lifestyles as a way to co-exist with dinosaurs, but new research finds that nighttime behavior may have evolved 100 million years earlier than mammals did.

http://www.livescien...-nocturnal.html

[taniwha]

So before the evolution of the eye, dinosaurs were in the dark.