Study shows dinosaurs were in decline up to 10 million years before asteroid hit

The study, published in the journal Nature Communications, concludes that this means the reptiles were already in decline before their death was caused by the impact of an asteroid 66m years ago

A T-Rex skeleton (Owen Humphreys/PA)

Dinosaurs were already in decline up to 10m years before their extinction was caused by the impact of a huge asteroid on Earth, according to a study.

An international team of scientists, including from the University of Bristol, examined the six most popular dinosaur families through the Cretaceous period, spanning from around 150 to 66m years ago.