Fauna Taxon Ontology - Eastern US — Dromus Ontology: Fauna Taxon Ontology - Eastern US Parent: Unionidae Children: Dromus dromas Datasets that use Dromus Horizon Eleven Trial Dataset Boon Horizon Eleven Dataset Hill Horizon 11 Koster-N Horizon 8A-10B Macro Indeterminate File Koster-N Horizon 11 Macro Koster-N Horizon 11 Flotation Koster-N HILL Other Horizons (4,6,9AB and 12) Macro Koster-N Horizons 8A-10B Micro