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маршбрукский ярусstresses
geol. Mrb (MichaelBurov); Marshbrookian (MichaelBurov); Marshbrook (MichaelBurov)
stratigr. Marshbrookian Stage (MichaelBurov); Marshbrookian strata (MichaelBurov); Marshbrookian sequence (MichaelBurov)