According to Stilo, this special status for this recent type is that these two varieties were originally Tatic which, under the intense influences of Caspian and Persian, have lost all their Tatic grammatical structures.
[2] According to some sources, the people in northern Qazvin (Alamut) speak a dialect of the Tati language.
[3][4][5][6][7][8] However, other sources state that the people of Alamut are Mazanderani[9][10] or Gilaks who speak a dialect of the Mazandarani or Gilaki language.
[13][14][15] This could explain why some sources refer to the Alamut dialects as Tatoid, while others claim they are Mazandarani or Gilaki.
[17] As of 1132853186 this edit, this article uses content from "A Critical Review of the Chapter Five of The Languages and Linguistics of Western Asia: An Areal Perspective Entitled: “The Caspian Region and South Azerbaijan: Caspian and Tatic”", which is licensed in a way that permits reuse under the Creative Commons Attribution-ShareAlike 3.0 Unported License, but not under the GFDL.