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Cretaceous Skull Reveals Earliest Head‑First Burrowing Snake

Brain and bone evidence indicate a head‑first digging lifestyle that points to independent habitat experiments early in snake evolution.

Study Finds Tight Birth-Canal Fit Is Common Across Many Primate Species

Lost Megalodon Vertebrae Confirm 24.3‑Metre Maximum Length

Fossil Hatchlings Show Early Tetrapods Grew Up Without Tadpole Metamorphosis

New Four‑Winged Microraptorine Jian changmaensis Described From China’s Changma Basin

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

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

New Cretaceous Bird Plumadraco Has Tail Feathers Twice Its Body Length

Study Links Tiny Theropod Arms to Bigger, Stronger Skulls

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

Bipedalism and Brain Expansion Explain Why Most Humans Are Right‑Handed

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

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

Scorpions Fortify Stingers and Claws With Metals, Smithsonian Study Finds

First Detailed Map of Mouse Smell Receptors Shows Precise Stripes

Patagonian Jurassic Giant Named Bicharracosaurus Expands Sauropod Map

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

First Mammal-Ancestor Egg Found Confirms Lystrosaurus Laid Eggs

Mummified Permian Reptile Reveals Oldest Rib-Powered Breathing System

Oldest Chelicerate Fossil Dates to 500 Million Years Ago