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CAS Fossil Collection Database

Accession Number 445.13   Country USA
thumbnail of image of CAS-GEO 445.13 Hyphantoceras irregulare HOLOTYPE
Taxon Hyphantoceras irregulare State/Prov./Dist. Oregon
InformalName ammonite County Jackson
Type Status HOLOTYPE Formation Hornbrook
Author / Date Anderson, 1958 Age CRETACEOUS