What followed was more than half a century of scientific debate, technological development, and ultimately a series of discoveries that transformed a fragmentary skull from a Czech cave into one of the most important ancient human specimens in the world.

Decades of Uncertainty

The skull was studied, catalogued, and stored.

For decades, estimates of its age ranged widely.

Some researchers placed it in the Upper Paleolithic period — the stretch of prehistory from roughly 50,000 to 12,000 years ago when anatomically modern humans first colonized Europe and developed the sophisticated cultural traditions we associate with early art, symbolic thinking, and complex tool use.

Others remained skeptical.