I am interviewing my sister Melanie about her publication on the last day of the Mesozoic period, which was published in the journal Nature on February 23 2022. What exactly are the “Mesozoic” and ...

A 500-million-year-old sea creature called Mollisonia shared a similar brain structure to modern spiders, suggesting that ...

A remarkable finding has surfaced in the colorful, fossil-rich badlands of Arizona’s Petrified Forest National Park: North America’s oldest known pterosaur. The newly identified species — a flying ...

A 225-million-year-old leg bone from Zambia is helping scientists rethink the size, diversity, and role of early dinosaurs.

A fossilized leg bone found in Africa is reshaping our ideas about the size of the first dinosaurs. The 225-million-year-old bone belonged to a mysterious reptile group called silesaurs, which lived ...

A newly uncovered 225-million-year-old fossil challenges everything we knew about early dinosaurs.

A prehistoric carbon spike turned oceans deadly and wiped out marine life. Scientists say today’s CO₂ rise could cause the ...

Smithsonian researchers have linked discoveries within Arizona’s Petrified Forest National Park with a previously unknown ...