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Oldest Chelicerate Fossil Dates to 500 Million Years Ago

The Utah fossil shows the first clear Cambrian chelicera to push the timeline back 20 million years.

T. Rex Likely Ran Toe-First, Study Finds, Raising Speed Estimates by About 20%

Digital Reconstruction of 1.5-Million-Year-Old Ethiopian Skull Redraws Early Homo Erectus Picture

Digits May Have Evolved by Repurposing Cloacal DNA, Nature Study Finds

Rare Fossil Points to Flight in Ancestors of Ostriches and Emus

Male Ratfish Grow True Forehead Teeth for Mating, Study Finds

Oldest Known Lepidosaur From 242 Million Years Ago Recasts Early Lizard Evolution

Ghost Sharks Grow True Forehead Teeth, Rewriting Rules of Tooth Development

Cambrian Fossil Reveals Spider Brain Structure and Sea Origin for Arachnids

506-Million-Year-Old Predator Mosura fentoni Unveiled from Canada's Burgess Shale

Study Reveals Mammalian Outer Ear Evolved from Fish Gills

Tiny Knee Bone May Have Facilitated Human Upright Walking