| Filter: Genus=%Arca (Arca)%; | Sort by: Accession # Taxon Locality |
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| AccessionNo | Genus | Species | TypeStatus | AuthorDate | Country | State | County | Formation | Age | |
| 5954.00 | Arca (Arca) | cf. hawleyi | VOUCHER | Reinhart, 1943 | USA | California | Kern | EOCENE | Details | |
| 70136.00 | Arca (Arca) | hawleyi | VOUCHER | Weaver & Kleinpell, 1963 | USA | California | Santa Barbara | Cozy Dell | EOCENE | Details |
| 70137.00 | Arca (Arca) | hawleyi | VOUCHER | Weaver & Kleinpell, 1963 | USA | California | Santa Barbara | Cozy Dell | EOCENE | Details |
| 72046.00 | Arca (Arca) | hawleyi | HOLOTYPE | Reinhart, 1943 | USA | California | Santa Barbara | Gaviota | EOCENE | Details |
| 72047.00 | Arca (Arca) | hawleyi | PARATYPE | Reinhart, 1943 | USA | California | Santa Barbara | Gaviota | EOCENE | Details |
| 71560.00 | Arca (Arca) | trilineata | VOUCHER | Grant & Gale, 1931 | USA | California | Los Angeles | PLIOCENE | Details | |
| 71561.00 | Arca (Arca) | trilineata | VOUCHER | Grant & Gale, 1931 | USA | California | Santa Barbara | PLIOCENE | Details | |
| 61956.01 | Arca (Arca) | trilineata calcarea | HOLOTYPE | Grant & Gale, 1931 | USA | California | San Diego | PLIOCENE | Details | |
| 72049.00 | Arca (Arca) | washingtoniana | VOUCHER | Reinhart, 1943 | USA | Oregon | Columbia | Pittsburg Bluff | OLIGOCENE | Details |
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