Dinosaur-era bird fossil found with unlaid egg

A group of scientists in Gansu province have discovered a fossilized bird dating back about 110 million years and the first ever to have an unlaid egg in its abdomen.

The fossil represents a new species, Avimaia schweitzerae, belonging to a group called the Enantiornithes, which was abundant around the world and coexisted with dinosaurs in the Cretaceous period.

The well preserved fossil was discovered in the city of Yumen.