 Kryukov undertook the study of the dynamics of kinship terminology among Eurasian ethnic groups having deep historical traditions of written records.However, though he seems to consider his results as having universal applicability, they appear to be most applicable to the evolution of kinship terminology in Eurasia and among the Austronesians.He has shown that among those peoples bifurcate merging systems tended to get transformed either into bifurcate collateral, or generational ones.