Mammals were nocturnal until dinosaur extinction, then emerged into daylight
Yahoo!,
After dinosaurs became extinct 66 million years ago, mammals became diurnal - © Stocktrek Images, Inc.
Dinosaur mass-extinction let mammals come out in the day
New Scientist,
Trevor Frost/National Geographic Creative A long-standing suspicion seems to have been confirmed: mammals like us spent their…
Mammals were nocturnal until dinosaur extinction, then emerged into daylight
Yahoo! News,
With enormous predators like Tyrannosaurus Rex skulking around in the daytime it is not surprising that the first mammals chose…
When dinosaurs went extinct, many animals literally came out of the dark
Science/AAAS,
The demise of dinosaurs was good news for mammals, whose numbers exploded in the aftermath.
Mammals Remained in the Shadows Until Dinosaurs Went Extinct
Seeker,
Not all was doom and gloom after dinosaurs went extinct around 65 million years ago.
Mammals switched to daytime activity after dinosaur extinction
EurekAlert!,
Mammals only started being active in the daytime after non-avian dinosaurs were wiped out about 66 million years ago (mya)…
Mammals switched to daytime activity after dinosaur extinction
Phys.org,
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Our Ancestors Stopped Sleeping In All Day After The Dinosaurs Died Off
Forbes,
Mark Witton (www.markwitton.com) Ancient mammals emerged from nocturnal life shortly after dinosaurs disappeared.