system (Q403523)
idealized composite unit of the geologic record representing the totality of rock strata laid down during a certain period of the geologic time scale
Language:
other details
description idealized composite unit of the geologic record representing the totality of rock strata laid down during a certain period of the geologic time scale

External Links
(P646) /m/047ls2_
(P2581) 01012745n
(P6366) 16359219
(P10565) 391037