The Belgian human zoo sounds exactly like the St. Louis equivalent just a few years later.
In 2001, French scientist Alain Beauvilain and three Chadian colleagues discovered a fossil cranium in the dunes of the Chadian Sahara Desert.
Some scientists hoped that H. naledi would prove to be the fossil to bridge an evolutionary gap.
Independent groups of researchers (e.g., Hössjer et al. 2016), more or less skeptical of common ancestry, have suggested the alternative model of initial heterozygotic diversity.