Estimates of its time depth have varied greatly, at either close to 190 kya or close to 140 kya in separate 2013 studies, and with the inclusion of the previously unknown "A00" haplogroup to about 270 kya in 2015 studies.
Estimates for the age of this event have varied significantly, with some studies placing it around 190,000 years ago and others around 140,000 years ago. The inclusion of a new haplogroup ("A00") in 2015 studies pushed the estimated age to approximately 270,000 years ago.