Taxonomy term

mesozoic

Travels in Geology: Mesozoic masterpiece: England's Jurassic Coast

England's southwestern shore is renowned for the nearly continuous 185-million-year record of Earth's history exposed in its sensational seacliffs, which record one of the world's best stratigraphic sequences from the Mesozoic Era.

18 Jun 2018

Early Triassic fossil showed live birth in action

An exceptional case of fossil preservation has provided the oldest view yet of the moment of live birth in a vertebrate. The fossil contains parts of four marine reptile individuals — a mother and her three young — from the ichthyopterygian genus, Chaohusaurus, and was unearthed in the Anhui Province of eastern China. While one of the young is still inside the mother and a second is already outside (and mostly obscured from view by other portions of the fossil), the third juvenile can be clearly seen emerging headfirst from the mother’s pelvis. Thought to be about 1 meter long when fully grown, Chaohusaurus lived about 248 million years ago in the Early Triassic and was an ancestor of later ichthyosaurs.

22 Jun 2014

Trial by Fire

What makes a fire burn? In addition to fuel (such as wood or paper) and heat, fires need oxygen. If there isn’t enough oxygen in the atmosphere, combustion simply won’t happen.

That was as true hundreds of millions of years ago as it is today. So wildfires, scientists say, can provide a unique way to estimate how much oxygen was in Earth’s atmosphere throughout its history.

04 Sep 2008