carboniferous period

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."

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

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.

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.

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.

We do know that most coal fields began life as swamps about 300 million years ago in the Carboniferous period.

They then colonized the freshwater swamps of the Carboniferous period.

They are ancient (unchanged since the Carboniferous period, 350 million to 290 million years ago).

The oldest amber originates from the Carboniferous period approximately 345 million years ago.

These flourished in the waterlogged swamps of the Carboniferous period.