Unearthed in Chilean Patagonia, the 74-million-year-old Yeutherium pressor is the smallest known South American mammal from the dinosaur era.

Researchers at the Gray Fossil Site and Museum have discovered something surprisingly familiar among the site's exotic ...

Scientists have discovered the fossil of a tiny mouse-sized mammal that lived in the time of the dinosaurs in Chilean ...

Published last week in the Proceedings of the Royal Society B, a team of Chilean scientists announced the discovery of ...

Scientists have discovered the fossil of a tiny mouse-sized mammal that lived in the time of the dinosaurs in Chilean ...

Fossils of mosasaurs and early mammals found in Louisiana reveal how life changed after the asteroid that ended the age of ...

Named for its razor-like teeth, Novaculadon mirabilis came from a rodent-like order that outlived the dinosaur extinction ...

By analyzing oxygen isotopes in dinosaur teeth, scientists revealed Mesozoic CO₂ highs, plant growth surges, and volcanic ...

The newly described Mirasaura grauvogeli from the Middle Triassic had a striking feather-like crest, hinting that complex skin appendages arose far earlier than previously believed. Its bird-like ...

SMU-led researchers used fossils and seismic images to trace Louisiana’s history around the time the dinosaur-killing ...

A prehistoric predator changed its diet and body size during a major warming event 56 million years ago, revealing how ...