Researchers have discovered an exceptionally preserved fossil site in Massachusetts that provides a rare glimpse into terrestrial life from ... during the early Pennsylvanian period and is located ...

This time period took place 359 to 299 million years ... (359.2 million to 318.1 million years ago) and the later Pennsylvanian (318.1 million to 299 million years ago). During the Mississipian ...

Terrestrial plant and animal life flourished amid these changes ... representing the Middle Pennsylvanian period. Now, an international team has discovered an entire ecosystem preserved in ...