Massagetean heavy cavalry in Gaugamela?

[hoplite14gr]

The Moscow Arccheological instute had a large excavation project in the Soviet East from 1978 to 1990.
Some of it was not done after the soviet colapse but some aspects continued with western funding or joint ventures.
Though initially the atifacts were Scythian and other step cultures, the South Uzbekistan and Tadjikistan excavations yielded Persian artifacts. They very first images appeared in soviet books as the one attached.

I saw some articles in newpaper sunday magazines here. Actually they did the article because a Professor in the Institute (of Greek origin)
was lecturing in Thessaloniki.

See attachment from russian book about later Achemenide armies.

Kind regards