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Depositional context. Examples are:
*anachronic – specimen older than the primary deposit, e.g. a Paleozoic spore in a Holocene deposit; may be redeposited from the catchment or may be derived from long distance, e.g. Tertiary pollen grains in Quaternary sediments with no local Tertiary source. A Pleistocene specimen in a Holocene archaeological deposit, possibly resulting from aboriginal fossil collecting, would also be anachronic.
*intrusive – specimen generally younger younger than the primary deposit, e.g. a domestic pig in an otherwise Pleistocene deposit in North America.
*redeposited – specimen older than the primary deposit and assumed to have been redeposited from a local source by natural causes.
*articulated – articulated skeleton
*clump – clump, esp. of pollen grains |