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Comparative Anatomy

Bird Anatomy Jaw Structure Unique Adaptations Skeletal Analysis Flying Reptiles Whale Anatomy Soft Tissue Analysis Primate Anatomy Dental Anatomy Sharks

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

Non-destructive X-ray scans of a South African fossil reveal an in-egg Lystrosaurus embryo, sharpening hypotheses about mammal reproductive origins.

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

Fossil Brain Scans Point to Rapid Origin of Pterosaur Flight

New Study Recasts Dunkleosteus as Cartilage-Heavy, Shark-Like Oddball

Nature Study Finds Digits Evolved by Reusing Ancestral Cloacal Regulatory DNA

Study Finds Rodent Thumbnails Are Widespread and Ancient

Researchers Name New Oligocene Whale Janjucetus dullardi

Chicago Archaeopteryx Reveals New Insights into Early Bird Flight

Ancient Bone Analysis Reveals Echidnas’ Aquatic Ancestry

62-Million-Year-Old Skeleton Reveals Close Evolutionary Link to Humans

New Study Redefines Megalodon as a Sleek, Energy-Efficient Predator

Fossil of 69-Million-Year-Old Bird Redefines Evolutionary History

Oldest Modern Lizard Fossil Reconfirmed as Squamate

35,000-Year-Old Saber-Toothed Cub Found Preserved in Siberia

New Fossil Discovery Illuminates Pterosaur Evolutionary Path

Prehistoric Crocodile Relatives' Sinuses Hindered Deep Diving Evolution

Scientists Unveil the Head of Earth's Largest Arthropod

225-Million-Year-Old Fossils Rewrite Early Mammalian Evolution

Jurassic Fossils from Isle of Skye Unveil Early Mammal Longevity