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Field Museum Names New 309‑Million‑Year‑Old Amphibian From Mazon Creek

The formal description uses rare soft‑tissue preservation to show greater amphibamiform diversity at the site.

Scientists Measured T. Rex Body Temperature at About 36.3°C Using Its Teeth

Early Homo Had Largely Abandoned Tree‑Climbing by 1.8 Million Years Ago

New Triassic Species Links Tanzania to South America and Revises Dinosaur Timeline

Study Measures T. Rex Body Temperature at About 36.3°C

T. Rex Ran at Human‑Like Body Temperature, Tooth Study Shows

Diplodocus Found in Spain Is First Confirmed Outside North America

Dinosaur Coprolite Yields First Hesperornithiform Feathers

Ancient 'American Cheetah' Is a Puma Relative, Genomes Show

Researcher Proposes Folding Australopithecus and Paranthropus into an Expanded Genus Homo

Triassic Fossil Suggests Live Birth in Ancestor of Mammals

Study Finds Possible 236-Million-Year-Old Evidence of Live Birth in Mammal Ancestor

Study Finds Archaeopteryx Took Off With a Series of Hops

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

New Ice Age Toad, Spea labreae, Described From La Brea Tar Pits

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

Study: Energetic Model Says Dinosaurs Should Have Been Much Smaller

Ancient DNA Shows Ice Age Humans Mostly Harvested Female Mammoths

Mexico and Central America Served as a 10‑Million‑Year Holding Pen for Northern Mammals

Early Cambrian Fossil Pushes Cephalopod Siphuncle Back 30 Million Years