Eastern Archaic Context Types — Post Not in Structure Ontology: Eastern Archaic Context Types Parent: Non-Structure Datasets that use Post Not in Structure Koster-N Horizon 8A-10B Macro Identified File Koster-N Horizon 11 Flotation Koster-N Horizon 11 Macro Koster-N HILL Other Horizons (4,6,9AB and 12) Macro Koster-N Horizons 8A-10B Micro Koster-N Horizon 8A-10B Macro Indeterminate File