A fossil smaller than a human fingernail has revealed a complete ancient brain, turning a speck of stone into a detailed map of early animal evolution. Encased inside this tiny creature are preserved ...

Fossils usually leave us with bones turned to stone, the hard remains of creatures long gone. But every so often, nature offers something far rarer — a glimpse of soft tissue that survived for ...

A bird brain from the age of dinosaurs reveals the roots of avian intelligence, according to a new study. The "one of a kind" fossil discovery could transform our understanding of how the unique ...

Navaornis hestiae (center) documents a previously unknown intermediate stage in the evolution of the central nervous system between the earliest birds (like Archaeopteryx on the left) and living birds ...