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New Study Links T. Rex’s Tiny Arms to Powerful Skulls

The analysis points to convergent arm reduction tied to stronger heads across several dinosaur lineages.

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Scorpions Fortify Stingers and Claws With Metals, Smithsonian Study Finds

First Detailed Map of Mouse Smell Receptors Shows Precise Stripes

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

Male Octopus Mating Arm Doubles as Hormone Sensor, Study Finds

Egypt Jaw Fossil Recasts Great Ape Origins

Micro‑CT Reveals New Korean Dinosaur Species, Doolysaurus, From Juvenile Skeleton

New Species Crocodylus lucivenator, Likely Predator of 'Lucy,' Described From Ethiopia

Feline Thoracic Spine Flexibility Tied to Tuck-and-Turn Righting in New Study

New Triassic Croc-Line Reptile Grew From Four-Legged Juvenile to Bipedal Adult

Permian Tetrapod From Brazil Reveals Twisted, Plant‑Grinding Jaw

Tiny Argentine Dinosaur Fossil Reshapes Alvarezsaur Evolution and Global Spread

Horses Whinny by Combining Vocal-Fold Vibration With a Laryngeal Whistle

New Dinosaur With Hollow Skin Spikes Identified in China

Cambridge Study Finds 12 More Flat-Faced Dog Breeds at Risk of Serious Breathing Disorder

Reanalysis of 1969 UK Fossil Reveals New Triassic Crocodylomorph, Galahadosuchus Jonesi

Elephant Trunk Whiskers Use Built-In Material Gradients to Pinpoint Touch, Study Finds