carboniferous

It lived in the late Carboniferous period, 306 million years ago.

The Carboniferous period actually came rather late in the planet's history.

The sea remained in place during the early part of the Carboniferous period.

Later, during the Carboniferous period, sea levels again began to rise and fall.

However, the state would once more be submerged during the early part of the Carboniferous period.

Seas continued to cover the state into the Carboniferous period.

These are the remains of volcanic activity in the Carboniferous period.

It's supposed to have gone extinct during the Carboniferous period.

They would later form a dominant part of the world's flora during the Carboniferous period.

Following this, the land subsided again in the Carboniferous period (359-299 million years ago).

The rock is estimated to have risen some 350 million years ago during the lower Carboniferous period.

But the most striking plants would begin with the carboniferous period, 250-340 million years ago."

"So there's only that one large island with humans; the rest of the planet is carboniferous."

Reptiles arose about 310-320 million years ago during the Carboniferous period.

Is it in some swamp of the carboniferous age?

During the Carboniferous period - from 350 million years ago - ferns lived everywhere on land.

This extinct family of sharks existed in the Carboniferous period.

Evolutionary innovation continued into the Carboniferous period and is still ongoing today.

The coal measures are carboniferous rocks laid down between 290 and 354 million years ago.

During the prehistoric Carboniferous period it was a sea floor and later a tropical forest.

Additional charcoal evidence suggests that fires continued through the Carboniferous period.

The strata of Carboniferous age are found in three areas:

Below all of the area is the coal bearing Carboniferous strata.

Terrestrial life was well established by the Carboniferous period.

Controversy has prevailed as to how insects of the Carboniferous period were able to grow so large.