Mammals were adapting from life in the trees to living on the ground before dinosaur ...
More mammals were living on the ground several million years before the mass extinction event that wiped out the dinosaurs, ...
Natural History Museum%2c London1 年
The Cretaceous Period: What was Earth like before dinosaurs went extinct?
You might know the Cretaceous Period for big animals such as Tyrannosaurus rex and Triceratops, or for being the end of the age of dinosaurs. But what was the world like in the millions of years ...
JSTOR Daily8 年
The Dakota Cretaceous of Kansas and Nebraska
Your Artstor image groups were copied to Workspace. The Artstor website will be retired on Aug 1st. Transactions of the Annual Meetings of t... Transactions of the Annual Meetings of the Kansas ...
National Geographic news3 年
Cretaceous Period
During this period, oceans formed as land shifted and broke out of one big supercontinent into smaller ones. 3 min read Continents were on the move in the Cretaceous, busy remodeling the shape and ...