A newfound fossil of a jawless fish is the oldest known vertebrate cranium preserved in 3D. The 455 million-year-old find could illuminate how vertebrate heads evolved.

Fossils of intact animals are more compelling, but vanishingly rare; before 2009, all published examples of more-or-less complete Silurian jawed fishes could be counted on the fingers of one hand 2.

Scientists have discovered the world’s oldest heart in a 380 million-year-old fossil of a jawed fish. Researchers from Curtin University in Australia found the “beautifully preserved” heart ...

A fossil found by a pair of hikers last year has turned out to be the skull of a huge new species of prehistoric fish that lived around 72 million years ago.

A newfound fossil of a jawless fish is the oldest known vertebrate cranium preserved in 3D. The 455 million-year-old find could illuminate how vertebrate heads evolved.