This time period took place 359 to ... lizard-like animals. Africa collided with eastern North America in the late Pennsylvanian, an event that formed the Appalachian Mountains.

with the eventual appearance of the lineages of almost all animals living today. This stunning and unique evolutionary flowering is termed the "Cambrian explosion," taking the name of the ...

The site reveals a diverse ecosystem of early land-dwelling animals and plants from a ... 320-318 million years ago during the early Pennsylvanian period and is located in the Wamsutta Formation ...