| Specimen ID | 615285 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | CA |
| County | Marin |
| Locality | San Anselmo Creek, upstream and downstream observations near Pastori Avenue Bridge, in Fairfax |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Pablo Bay |
| HUC8 Number | 18050002 |
| HUC10 Name | Corte Madera Creek-Frontal San Fransisco Bay Estuaries |
| HUC10 Number | 1805000209 |
| HUC12 Name | Corte Madera Creek |
| HUC12 Number | 180500020901 |
| Map | |
| Collection Day | 5 |
| Collection Month | 9 |
| Collection Year | 2013 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Comments | See voucher photos. Reported as "Found in high densities on woody debris, aquatic vegetation, and cobble substrate surfaces". |
| Record Type | Personal communication |
| Verifier | California Department of Fish and Wildlife AB Lab |
| Freshwater/Marine | Freshwater |
| Number Collected | hundreds |
| Photo | |
