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noun | adjective
Riphaean abbr.
abbr. R (MichaelBurov); Riphaean era (MichaelBurov); Riphaean erathem (MichaelBurov); Riphaean epoch (MichaelBurov); Riphaean age (MichaelBurov); Riphaean time (MichaelBurov)
geol. Riphean (MichaelBurov)
Riphaean adj.
geol. рифейский (MichaelBurov)