380-Million-Year-Old Fish Fossil Reveals Secrets of Life’s First Steps Onto Land

Advanced imaging of the only known Koharalepis jarviki fossil from Antarctica revealed hidden skull and braincase details.

The 380-million-year-old Devonian fish had breathing-related openings and other traits linked to early tetrapodomorphs.

These internal features help clarify how fish relatives adapted during the water-to-land transition.

The find offers rare anatomical evidence for the ecology and evolution of early land vertebrates.