Gerry asked

> >What dates are you placing on Nostratic?
>
> At approximately 15,000 BCE (post-glacial).

Good to see we agree on something there Glen. And what location do
you see as Nostratic's Urheimat?

I see a problem with your tree Glen. What time span do you put along
the horizontal axis (or if you want to avoid something as "crude" as
time - what is your "linguistic difference" scale)? According to
what you have drawn the most recent separation is between NW
Caucasian and Na Dene, which occurred in less than a quarter of the
time that Hurro-Urartuan separated from NE Caucasian, and less than
1/8th the time since they separated from Hattic. Is this what you
really mean, or is the diagram not meaning to have a horizontal scale
at all?

Apart from that, and one small detail - I feel the Amerind languages
are possibly closer to your "Dene Caucasian" than to "Asiatic".
Certainly that would appear to be the case on the archaeological and
genetic evidence that you don't like considering Glen. At such a
deep time, every piece of evidence needs to be considered.

Regards

John