| Filter: Genus=%Arca%; | Sort by: Accession # Taxon Locality |
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| AccessionNo | Genus | Species | TypeStatus | AuthorDate | Country | State | County | Formation | Age | |
| 69718.00 | Arca | trilineata | VOUCHER | (Waring in) McLaughlin & Waring, 1915 | USA | California | Santa Cruz | Purisima | MIOCENE | Details |
| 4158.00 | Arca | usiacurii | HOLOTYPE | Anderson, 1929 | Colombia | Atlantico | Tubera group | MIOCENE | Details | |
| 4159.00 | Arca | usiacurii | PARATYPE | Anderson, 1929 | Colombia | Atlantico | Tubera group | MIOCENE | Details | |
| 382.00 | Arca | washingtoniana | HOLOTYPE | Dickerson, 1917 | USA | Washington | Lewis | OLIGOCENE | Details | |
| 4160.00 | Arca (Anadara) | grandis | VOUCHER | Anderson, 1929 | Panama | MIOCENE | Details | |||
| 6769.00 | Arca (Anadara) | santaclarana | PARATYPE | Loel & Corey, 1932 | USA | California | Ventura | Vaqueros | MIOCENE | Details |
| 71622.00 | Arca (Anadara) | santaclarana | PARATYPE | Loel & Corey, 1932 | USA | California | Ventura | Vaqueros | MIOCENE | Details |
| 6770.00 | Arca (Anadara) | santana | PARATYPE | Loel & Corey, 1932 | USA | California | Monterey | Vaqueros | MIOCENE | Details |
| 8343.00 | Arca (Anadara) | trilineata | VOUCHER | Hertlein, 1951 | USA | California | San Mateo | Merced | PLIOCENE | Details |
| 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 |
| 7394.00 | Arca (Barbatia) | cowlitzensis | HOLOTYPE | Weaver & Palmer, 1922 | USA | Washington | Lewis | Cowlitz | EOCENE | Details |
| 7397.00 | Arca (Barbatia) | landesi | HOLOTYPE | Weaver & Palmer, 1922 | USA | Washington | Lewis | Cowlitz | EOCENE | Details |
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