Science ❯ History

Earth History

Cretaceous Period Geological Time Scale Mesozoic Era Cambrian Period Devonian Period Early Earth Conditions Mass Extinctions Prebiotic Chemistry Cambrian Explosion Early Life

New 500-Million-Year-Old Arthropod From Québec Narrows the Late Cambrian Fossil Gap

Its unusual spines and preservation in under-studied mudstones point to sampling bias rather than a clear global biodiversity collapse.

Giant Cretaceous Octopuses May Have Ruled the Seas, Science Study Finds

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

Chinese Fossil Trove Pushes Complex Animal Origins Into the Ediacaran

Oldest Chelicerate Fossil Dates to 500 Million Years Ago

New Chemical Fossils Strengthen Case That Sponges Were Earth’s Earliest Animals

Grinding Tomography Reveals 40 New Squid Species in 100-Million-Year-Old Rock

Discovery of Jurassic Bird Fossil Reshapes Understanding of Avian Evolution

New Fossil Discovery Reveals Evolutionary Impact of Tectonic Activity

New Research Links Rainwater to Formation of First Protocell Walls

Asteroid Impact 66 Million Years Ago Catalyzed Bird Evolution

520-Million-Year-Old Fossil Reveals Early Arthropod Evolution

New Study Suggests Complex Life on Earth Began 2.1 Billion Years Ago

New Study Reveals T. Rex Could Have Been 70% Larger Than Previously Thought