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Study Suggests Animals May Have Evolved 200 Million Years Earlier

By combining new taphonomic data from the Kheseen Biota with older geological calibration points, researchers recalibrated molecular clocks and produced much older dates for the origin of crown-group animals.

New Four‑Winged Dinosaur Norellraptor Barsboldi Shows Flight Evolved Independently

New 324‑Million‑Year‑Old Fossil Rewrites How Insects Moved Onto Land

Study Finds Possible 236-Million-Year-Old Evidence of Live Birth in Mammal Ancestor

Study Finds Dinosaurs Were Barred From Evolving into Very Small Body Sizes

550-Million-Year-Old Worm Shows Population Bias for Rightward Turns

520-Million-Year-Old Fossils Confirm Bryozoans in the Early Cambrian

New Cretaceous Bird Plumadraco Has Tail Feathers Twice Its Body Length

Study Links Tiny Theropod Arms to Bigger, Stronger Skulls

Study Links Tiny T. rex Arms to the Rise of Powerful Jaws

New Fossils and Geochemistry Redraw Origins of Complex Life

First Mammal-Ancestor Egg Found Confirms Lystrosaurus Laid Eggs

Chinese Fossil Trove Pushes Complex Animal Origins Into the Ediacaran

Oldest Chelicerate Fossil Dates to 500 Million Years Ago

New Triassic Croc-Line Reptile Grew From Four-Legged Juvenile to Bipedal Adult

Permian Tetrapod From Brazil Reveals Twisted, Plant‑Grinding Jaw

Oldest Articulated Bony Fish and Giant Megamastax Redraw Osteichthyan Origins

Tiny Teeth Found in Colorado Extend Range of Earliest Primate Relative

Ordovician Mass Extinction Set the Stage for the Rise of Jawed Fishes

Fossil Brain Scans Point to Rapid Origin of Pterosaur Flight