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Evolutionary Biology

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Fossil Points to Live Birth in a 236‑Million‑Year‑Old Mammal Ancestor

Based on a rare neonatal growth mark and comparisons with modern species, the authors call for more specimens to test their claim.

Choice Overload Makes Female Treefrogs Slower and Less Accurate at Picking Mates

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

Study Proposes Two Independent Origins of Free‑Living Cells

Darwin Vindicated: Alpine Saxifraga Confirmed as Carnivorous

Review Links Cambrian 'Faecal Revolution' to Rise of Animal Life

New ARG Method Finds ‘Ghost’ and Super‑Archaic Hominin DNA in All Humans

Oxford Review Finds Wild Primates Form Friendly Bonds With Other Species

Early Cambrian Fossil Pushes Cephalopod Siphuncle Back 30 Million Years

1.43-Million-Year-Old Footprints Suggest Paranthropus boisei Walked in Male Groups

Lake‑Fly Larvae Withstand Deep Pressure and Upend Ocean‑Insect Explanation

Naked Mole‑Rat Queen Uses a Single Scent to Suppress Colony Fertility

Reassuring Touch Linked to More Peaceful Feeding in Bonobos and Chimpanzees

Many Social Animals Routinely Prepare for Intergroup Conflict

Ediacaran Fossils Show Population-Level Turning Bias, Researchers Say

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

Mice at 22,000 Feet: How the World's Highest‑Dwelling Mammal Survives

Thailand Names New Mamenchisaurid Sauropod, Uragasaurus kalasinensis

Study Shows Physics Shapes Nature’s Fangs, Spines and Stingers

MSU Tests Show AI Can Be Systematically Fooled Into Seeing Life