Learn about the time period that took place 251 to 199 million years ago. 3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a ...

A study published in the peer-reviewed journal Cretaceous Research announced Tuesday the discovery of Archaeocyclotus brevivillosus, a tropical land snail from the Mesozoic era. The snail ...

A bizarre bird from the Mesozoic Era had a small, scythe-like beak with one tooth at its tip. Its fossil was found in Madagascar and hints at a lost world of ancient birds that paleontologists are ...

Non-bird dinosaurs lived between about 245 and 66 million years ago, in a time known as the Mesozoic Era. This was many millions of years before the first modern humans, Homo sapiens, appeared.

With recent analysis, they have found that the nearly complete avian skeleton dates back roughly 127 million years, putting it in the Mesozoic Era, during the time of dinosaurs. The fossil is of a ...