History ❯ Earth History

Geological Time Scale

Cretaceous Period Permian Period Mesozoic Era Mass Extinction Events Planetary Formation Paleoarchean Era Triassic Period Ediacaran-Cambrian Transition Cryogenian Period Sedimentation

Study Identifies Warm, Low‑Oxygen Seas as the Cause of the Permian–Triassic Marine Collapse

By linking Siberian Traps greenhouse forcing to ocean deoxygenation, researchers say the same ocean stressors could threaten modern marine life.

Upright ‘Polystrate’ Fossils Renew Debate Over Flood Claims

Late Ediacaran Fossils in China Push Back Origins of Major Animal Groups

Reanalysis of Lost WA Fossils Splits Iconic Triassic Amphibian Into Two Species

Ancient Salt Yields First Direct Mesoproterozoic CO2, Indicating a Mild 1.4-Billion-Year Climate

Ancient Mantle Rocks Reveal Potassium-40 Deficit Linked to Surviving Proto‑Earth

Earth’s Oldest Intact Rocks Confirmed at 4.16 Billion Years in Quebec

Ancient River-Carved Terrain Discovered Beneath East Antarctic Ice

Ancient Microbial Traces Discovered in Desert Marble and Limestone

Nearby Supernovae Linked to Two Ancient Mass Extinctions on Earth

Ancient Volcanic Eruptions Linked to Earth's First Oxygen Surges

World’s Oldest Impact Crater Discovered in Australia

Ancient Amphibians Thrived After Earth's Deadliest Extinction

Ancient Glaciers Shaped Earth's Oceans, Boosting Evolution of Complex Life

Zanclean Megaflood Refilled Mediterranean Sea in Record-Shattering Event 5 Million Years Ago

Earth's Magnetic North Pole Rapidly Shifts Toward Russia

Earliest Evidence of Coral-Algae Symbiosis Discovered in 385-Million-Year-Old Fossils

Ancient Asteroid Impact Catalyzed Early Life on Earth

Mega El Niños Linked to Earth's Largest Mass Extinction