Culturogenesis in the middle of the 2nd millennium B.C. was complicated and multicomponent ones phenomen. The earli tipes of timber-grave culture developed in various ways in different natural geographic niches of Volga, Don and Ural with participation of different transitional cultural types at the turn of middle and late bronze ages (Krivaya Luka, Babino, Lola, Volsk, Pokrovsk, Potapovka, Sintashta, Petrovka). Further we can see global convergence of steppe cattlebreeding tribes and general leveling of the local peculiarities of timber-grave culture.
