Institute for Biodiversity Science and Sustainability
  CAS » IBSS (Research) » Invertebrate Zoology & Geology » Fossil Collection Database

CAS Fossil Collection Database

Accession Number 992.00   Country USA
thumbnail of image of CAS-GEO 992.00 Semifusus ? dickersoni HOLOTYPE dorsal
dorsal
thumbnail of image of CAS-GEO 992.00 Semifusus ? dickersoni HOLOTYPE ventral
ventral
Taxon Semifusus ? dickersoni State/Prov./Dist. California
InformalName gastropod County
Type Status HOLOTYPE Formation Martinez
Author / Date Nelson, 1925 Age EOCENE