| Filter: Genus=%Olcostephanus%; | Sort by: Accession # Taxon Locality |
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| Accession Number | 70094.00 | Country | USA | |
| Taxon | Olcostephanus popenoei | State/Prov./Dist. | Oregon | |
| InformalName | ammonite | County | Douglas | |
| Type Status | PLASTOHOLOTYPE | Formation | Myrtle Group | |
| Author / Date | Imlay, 1960 | Age | CRETACEOUS |
| Accession Number | 70103.00 | Country | USA | |
| Taxon | Olcostephanus pecki | State/Prov./Dist. | Oregon | |
| InformalName | ammonite | County | Douglas | |
| Type Status | PARATYPE | Formation | Myrtle Group | |
| Author / Date | Imlay, 1960 | Age | CRETACEOUS |
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