The story begins with those sculptured stones found at Lepensi Vir,in
the shape a fishy-human heads.
Picture:
http://commons.wikimedia.org/wiki/Image:Lepenski_Vir_Head.JPG
The puzzle is that the same idea appeared thousend years later as
Dagan/Dagon in Near-East.
My idea is that related to :
-Nostratic:. Meaning: to brand. Georgian: dag-.
-Proto-North-Dravidian : *dag- :"to shine";
Here we could have in fact in a larger area root *DAG-: "to burn,
cauterize, brand,"?
I suppose a pre PIE (or proto-Aegean)*DAG:"shiny/shining"? from wich
the later:
-Proto-IE:*dAg'h- "day". (otherwise Proto-Indo-European *dʰegʰ- ("`to
burn'").* dyew, "light of day"), and
-Sumerian DAG:"day,bright,shining,light,day-break,dawn"?
Maybe the source is the (burning)shining SUN.This word come to ment
either in sumerian :"spread/streched out,extend,cover",at least some
beeing also atributes of the sun.
My hypothesys is that from this very *DAG:"shiny"?
(sparkling,flaming,brilliant,...?)come later:
Altaic/turkish DAG:"mountain" (covered with snow>shining peak,as eg.
Nemrut-Dag/Nimrud Dagh (Mount Nimrod)is)
Pr.-Afr.As. *dag-'fish':Proto-Semitic *dag- 'fish':Hebrew
day 'fish'(wich of corse is shining)
DAG:"day-light" in PIE >> DAG:"day" in IE
Avestan DAG:"tu burn" and in sanskrit Dag-da,together with
dah/dahati:"to burn".See also European,(irish)
daig/daigh :"flame,fire" and Dagaz wich symbolizes light at its
height, much equated with summer.
This DAG could be in that remote time that "shining-one" the
heavenly,sky,ocean-sky deity,(above all/other deities?).