| Specimen ID | 256699 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | CA |
| County | Humboldt |
| Locality | Big Lagoon [~7 mi N of Trinidad] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Mad-Redwood |
| HUC8 Number | 18010102 |
| HUC10 Name | Big Lagoon-Frontal Pacific Ocean |
| HUC10 Number | 1801010205 |
| HUC12 Name | Luffenholtz Creek-Frontal Pacific Ocean |
| HUC12 Number | 180101020503 |
| Map | |
| Collection Month | 9 |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | unknown |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
