This is interesting. We have cultural information that humanity was augmented around 200,000 years ago. Now we have a good look at the pre inflexion skull and it suggests a radically different brain architecture just a 100,000 years earlier with modern volumes. Changing around the architecture to what we know to be unique to start with could only be done with major DNA augmentation.
The answer to that will be DNA if we can find it here.
What this does inform is that an emergent homo sapiens existed but lacked significant brain assets. Changing this short circuited millions of years of doubtful brain development.
Scientists Have Found the Oldest Known Human Fossils