Trilobites: Evolution and Diversification of Ancient Arthropods
Trilobites are one of the most iconic and diverse groups of extinct marine arthropods, thriving for over 270 million years from the Cambrian Period (521 million years ago) to the …
The Permian Period
The Permian Period: Earth’s Greatest Transition The Permian Period (approximately 299 to 252 million years ago) represents the final chapter of the Paleozoic Era and a time of profound change …
The Mississippian Period
The Mississippian Period: A Time of Shallow Seas and Marine Marvels The Mississippian Period (approximately 359 to 323 million years ago) represents the first half of the Carboniferous Period in …
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 …