Dinosaurs ended – and originated – due to a mass extinction

It is commonly understood that the dinosaurs disappeared with a bang – wiped out by a great meteorite impact on the Earth 66 million years ago.

 

But their origins have been less understood. In a new study, scientists from MUSE – Museum of Science, Trento, Italy, Universities of Ferrara and Padova, Italy and the University of Bristol show that the key expansion of dinosaurs was also triggered by a crisis – a mass extinction that happened 232 million years ago.

 

 

Sourced through Scoop.it from: www.bristol.ac.uk