Analysis of information sources in references of the Wikipedia article "Sakalar" in Turkish language version.
The Iranian living such geographic diversity were not a monolithic people...For example the Iranian Scythians (Saka) in central Asia spoke languages and carried out ways of life far different than Iranians living in the southwest on the borders of Mesopotamia.
Texts are known in several Middle Iranian languages, including Middle PERSIAN, Parthian, Chorasmian, Bactrian and SOGDIAN. Further east, KHOTANESE is considered a late variety of Saka, the only one in which literary texts are known.
The regions of Tashkent, Fergana, and Kashgar were inhabited by the people known to the Chinese under the name of Sse..They were in fact the "Scythians of Asia." They formed a branch of the great Scytho-Sarmatian family; that is, they were nomadic Iranians from the northwestern steppes.
The Śaka tribe was pasturing its herds in the Pamirs, central Tien Shan, and in the Amu Darya delta. Their gold belt buckles, jewelry, and harness decorations display sheep, griffins, and other animal designs that are similar in style to those used by the Scythians, a nomadic people living in the Kuban basin of the Caucasus region and the western section of the Eurasian plain during the greater part of the 1st millennium bc.
The Śaka tribe was pasturing its herds in the Pamirs, central Tien Shan, and in the Amu Darya delta. Their gold belt buckles, jewelry, and harness decorations display sheep, griffins, and other animal designs that are similar in style to those used by the Scythians, a nomadic people living in the Kuban basin of the Caucasus region and the western section of the Eurasian plain during the greater part of the 1st millennium bc.