[AlotOfReading]

I don't know why you're on about this, but our foot shape has been essentially static across the entirety of genus Homo. The difference in time between us and them is an imperceptible rounding error compared to the many millions of years since bipedalism evolved. These people looked like us, wore clothes, spoke languages, etc. If you teleported one of their infants forward and raised it, it would be virtually indistinguishable from a modern person until you did genetic testing.

[quantadev]

If feet can change 30% in 50 years then toes can certainly change that much in thousands. And I'm not even saying it was worldwide, just the people who made those mud footprints. And that 30% isn't even all humans either, it's bizarrely only women.

Evolution can happen rapidly sometimes. Lookup "island rule" or "Foster's rule", which is also about this. Changing environmental conditions can rapidly increase evolution rates, specifically for "size" attribute.