| United States (contiguous states) | 1953 | | | AMNH | 1.524 - 1.524 | A site north of jetty paralleling the channel which runs immediately to the south of Point Richmond. | SLB |
| United States (contiguous states) | 1955 | | | | 1.524 - 1.524 | A site north of jetty paralleling the channel which runs immediately to the south of Point Richmond. | SLB |
| United States (contiguous states) | 1955 | | | AMNH | 1.524 - 1.524 | A site north of jetty paralleling the channel which runs immediately to the south of Point Richmond. | SLB |
| United States (contiguous states) | 1957 | | | AMNH | 0.9144 - 1 | Approximately 91.44m northwest of the Point Richmond shoreline, San Francisco Bay, California. | SLB |
| United States (contiguous states) | 1957 | | | AMNH | 0.9144 - 1 | Approximately 91.44m northwest of the Point Richmond shoreline, San Francisco Bay, California. | SLB |
| United States (contiguous states) | 1957 | | | | 0.9144 - 1 | Approximately 91.44m northwest of the Point Richmond shoreline, San Francisco Bay, California. | SLB |
