The original fossils disappeared in 1941, but casts and descriptions remain. They show that this subspecies looked similar to modern humans and Neanderthals, and used stone tools. Most likely fire was used, and it is currently unknown if interbreeding was between "Homo erectus" and "Homo sapiens," and if this is an ancestor or member of the Denisovan peoples of East Asia. No religious or symbolic findings are yet associated with this subspecies.