They have not been found later than the Cretaceous period.

The area has been above sea level since the Cretaceous period.

The state was covered again by the sea during the Cretaceous period.

According to the new study, 84 percent of the insect families living in the Cretaceous period are still around.

The magnolia family also goes back to the middle of the Cretaceous period.

The story begins 65 million years ago, sometime in the late Cretaceous period.

Termites have been common since at least the Cretaceous period.

There was a radical change in vegetation during the Cretaceous period.

Almost 80% of the island's area is volcanic rock from the Cretaceous period.

It is supposed that this group arose in the Cretaceous period over 140 million years ago.

Living during the late Cretaceous Period, 75-65 million years ago.

Ichthyornis lived 135-70 million years ago, during the Cretaceous period.

The animal was believed to have lived in the early Cretaceous period, approximately 120 million years ago.

This process took place during the Cretaceous Period, 100 million years ago.

So far, no rebbachisaurids are known from the very end of the Cretaceous period.

The family of this fern did not first appear until the Cretaceous period.

This is the famous event which killed the dinosaurs at the end of the Cretaceous period.

Like all mosasaurs, it lived in the late Cretaceous period, about 83.5 million years ago.

Even in the late Cretaceous period, much of this area was desert, or at least very dry, habitat.

Palms first appear in the fossil record around 80 million years ago, during the late Cretaceous period.

During the Cretaceous period it lived near a shallow lagoon.

Dinosaurs had died out in the Cretaceous period, sixty-five million years ago.

It was formed during the Late Cretaceous period 80 million years ago.

Olingechiton became extinct at the end of the Cretaceous period.

The family existed during the Cretaceous period in what is now Europe.