The researchers say their discovery, reported in the journal Nature, could be a sort of "Rosetta Stone" for determining the ...

But how the avian brain evolved over many millions of years from an ancestral dinosaurian form has long puzzled scientists. That has now changed thanks to a spectacular fossil discovery in Brazil.

An 80-million-year-old fossil bird has been discovered with a skull so exquisitely preserved that scientists have been able to study the detailed structure of its brain. The fossil, which bears a ...

Navaornis lived approximately 80 million years ago in what is now Brazil, before the mass extinction event that killed all non-avian dinosaurs ... most areas of its brain, like the cerebellum ...