The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago were ...

Recent research, led by Vera Korasidis and palynologist Barbara Wagstaff, published in Alcheringa: An Australasian Journal of ...

They began changing the way the world looked almost as soon as they appeared on Earth about 130 million years ago, during the Cretaceous period. That's relatively recent in geologic time ...