The full Neanderthal type...around 60,000 years ago.
Perhaps the reason that the "full Neanderthal type" is more extreme than the ones from 90,000 year ago is a result of the great Toba eruption around 74,000 years ago. Scientists have recently suggested that human population was reduced to as few as 5 or 10,000 individuals as a result of the several years of "nuclear winter" that would have resulted when this monstor exploded leaving a crater measuring 18 miles by 65 miles. In contrast, Pinitubo left a crater 3 miles in diameter, and you may remember the 500 year flood we had in the Mississippi among other severe weather phenomena.
The isolated pockets of Neanderthal that survived, might have had the heavier, more "brutish" bodies that would have survived such severe conditions. This would then have remained is the "standard" body type. Meanwhile, our kind which survived in the warmer climate of Africa would have been quite different, with far less need for a heavy build.
The Neandertal EnigmaFrayer's own reading of the record reveals a number of overlooked traits that clearly and specifically link the Neandertals to the Cro-Magnons. One such trait is the shape of the opening of the nerve canal in the lower jaw, a spot where dentists often give a pain-blocking injection. In many Neandertal, the upper portion of the opening is covered by a broad bony ridge, a curious feature also carried by a significant number of Cro-Magnons. But none of the alleged 'ancestors of us all' fossils from Africa have it, and it is extremely rare in modern people outside Europe." [pp 126-127]
by James Shreeve