Scope note

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This property associates a kind of object (documented as an instance of E55 Type) with an instance of E4 Period indicating that objects of this kind have been generated in this period in significantly greater numbers and in wider distributions, than in other periods. This property makes a moderate statement concerning the distribution of the associated object kind in the observed record: If a "sufficient number" of objects of this type are found in a context, and their genesis can plausibly be assumed to fall within the genesis of the find context, then the statement made with this property would support reasoning, ceteris paribus, that the genesis period of the find context is likely to form part of the related instance of E4 Period, or at least overlap with it. “Sufficient number” means that the density of objects of this kind in the find context is compatible with the general density that this kind of object had during the associated period in contexts of a comparable nature and deposition history. A stronger claim can be made using AP30 restricted to (restricts appearance of) while a weaker claim would use AP29 appears in (has appearing type).

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