What is pertaining to, or depended upon, the order or arrangement of strata; as, stratigraphical evidence. -- Strat`i*graph"ic*al*ly, adv called?

stratigraphical — Pertaining to, or depended upon, the order or arrangement of strata; as, stratigraphical evidence. -- Strat`i*graph"ic*al*ly, adv. (Webster's 1913.)

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