COSMOS MAGAZINE

Fossilised poo and vomit tell of  dinosaurs rise

An analysis of more than 500 fossils from central Europe’s Polish Basin has shown how dinosaurs became the dominant lifeforms on land by the beginning of the Jurassic period.

The fossils, however, are not bones, teeth or even footprints. They’re bromalites – the fossilised remains of digestive material such as faeces or vomit.

3D imaging revealed the contents of the ancient, digested food. It showed that omnivorous early dinosaurs were able to outcompete the non-dinosaur land animals that had dominated before.