The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be ...

An analysis of North America’s fossil record for the 18 million years before dinosaurs disappeared suggests the prehistoric ...

The Mesozoic Era extinctions formed the world as we know it today. Read about what caused them and which animals survived.

A new study suggests that dinosaurs likely weren't in decline before an asteroid wiped them out 66 million years ago; instead ...

The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be explained by a worsening fossil record from that time rather than a genuine ...

Dr. Chris Shelton and student Kolby Dooling unearthed a rare, well-preserved ammonite fossil at a site in Oklahoma, and it ...

With an incredible history and mysterious extinction, these fascinating creatures continue to puzzle scientists to this day.

The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be explained by a worsening fossil record from that time rather than a genuine ...

A new study suggests that dinosaurs likely weren't in decline before an asteroid wiped them out 66 million years ago; instead, there may just be limited fossils from that time period, challenging ...