___It's pretty hard to come up with archeological behavioral evidence as it is. Even well preserved artifacts attributed to behaviors (statuary, altars, tools, etc.) have inferred behavioral attributes hotly contested. Only recently did a 5,000 year old bison skull with an embedded stone spear point place the atlatl technology in the SW during that time period.
___190,000 years is plenty of time to erase human evidence; look what Katrina did to the Gulf Coast in just days, or Popeii & Herculaneum for that matter.
___This new work is very interesting; punctuated evolution anyone?
