Around 540 million years ago, Earth's biosphere underwent a pivotal transformation, shifting from a microbe-dominated world ...

A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems. In the aftermath, jawed vertebrates gained an unexpected edge by surviving ...

About 445 million years ago, Earth’s oceans turned into a danger zone. Glaciers spread across the supercontinent Gondwana, ...

One of Earth’s earliest mass extinctions wiped out most ocean life during a sudden global ice age. From the ruins, jawed vertebrates survived, diversified, and transformed the course of evolution.

Cave of the Mounds, a National Natural Landmark just west of Madison, has welcomed millions of students underground since ...

Modern-day Ohio is more than 600 kilometers from the ocean - yet it has thousands of ocean fossils dating back to the Ordovician, giving us a glimpse at its past under an ancient, fishless sea. Thanks ...

An international team of scientists from South Africa, Canada, France and the UK has uncovered fossil evidence of a tiny ...

The fall in jawless vertebrates coincides with the rise of jawed vertebrates following the two pulses of the Late Ordovician Mass Extinction (LOME). Top genus-level diversity curves follow global, ...

The Cave of the Mounds serves as more than just a geological site; it functions as an interactive classroom where students can engage directly with nature. Visitors descend into the cave, encountering ...

In a small northwest Iowa town built atop a 74-million-year-old meteorite crater, even the drinking water carries remnants of ...