The planet's trees have seen plenty of history pass by their trunks. In fact, they began to populate Earth 385 million years ...

Petoskey stones have a larger, more symmetrical hexagonal pattern than Charlevoix stones. Rock collectors in northern ...

The Devonian Period was also an exciting time for life. It has been called both the age of fishes and the age of forests, as bony fishes and seed-dropping trees arose during this time.

Some Devonian trees are known to have grown 100 feet (30 meters) tall. By the end of the period the first ferns, horsetails, and seed plants had also appeared.

While the Late Devonian Mass Extinction left forests unperturbed, disaster befell life in the ocean. Almost 73 million years after the late Ordovician mass extinction, or 375 million years ago, half ...