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Paleontology

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

The authors argue expanding coprolite production redistributed nutrients through ancient oceans to help fuel the Cambrian Radiation.

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

Fossil Hatchlings Show Early Tetrapods Grew Up Without Tadpole Metamorphosis

Early Asexuality Slowed Animal Evolution, Study Finds

Genomes Show Cave Lion Was a Distinct Panthera Lineage

Study Finds Stronger Skulls Often Preceded Arm Loss in Large Meat‑Eating Dinosaurs

Study Links T. Rex’s Tiny Arms to Bigger, Stronger Skulls

Study Links Tiny Theropod Arms to Bigger, Stronger Skulls

Study: T. rex Arms Shrank as Skulls Became the Main Weapon

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

New Fossils and Geochemistry Redraw Origins of Complex Life

Study Links Tiny T. Rex Arms to Evolution of Massive Robust Skulls

Study Links Tiny Theropod Arms to Big Reinforced Skulls

First Confirmed Egg From a Mammal Ancestor Found in 250-Million-Year-Old Fossil

First Mammal-Ancestor Egg Found Confirms Lystrosaurus Laid Eggs

Oldest Chelicerate Fossil Dates to 500 Million Years Ago

Egyptian Ape Fossil Challenges East Africa as Cradle of Modern Apes

307-Million-Year-Old Skull Pushes Back the Origin of Plant-Eating on Land

Chicago Archaeopteryx Reveals Oldest Oral Papillae, Illuminating Early Bird Feeding

Archaeopteryx Fossil Reveals Bird-Like Mouth Features Linked to Flight Demands