The Devonian Period
The Devonian Period: The Age of Fishes and the Greening of the Land The Devonian Period (419–359 million years ago) is one of the most dynamic intervals in Earth’s history. …
The Silurian Period
The Silurian Period: Life’s Step Onto Land The Silurian Period (443–419 million years ago) marks a transformative era in Earth’s history, bridging the gap between the Ordovician and Devonian periods. …
The Pennsylvanian Period
The Pennsylvanian Period: The Age of Coal Forests The Pennsylvanian Period (approximately 323 to 299 million years ago) is the latter half of the Carboniferous Period in North America, following …
The Ordovician Period
The Ordovician Period: A Time of Biodiversity and Transformation The Ordovician Period (485–443 million years ago) stands as a pivotal era in Earth’s history. Following the Cambrian Explosion, the Ordovician …
The Cambrian Period
The Cambrian Period: A Window into Life’s Explosion The Cambrian Period (approximately 541 to 485 million years ago) marks a transformative chapter in Earth’s history. Often referred to as the …