| Specimen ID | 275496 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | MT |
| County | Gallatin |
| Locality | Madison River |
| Mapping Accuracy | Accurate |
| HUC8 Name | Madison |
| HUC8 Number | 10020007 |
| HUC10 Name | Headwaters Madison River |
| HUC10 Number | 1002000702 |
| HUC12 Name | Madison Arm-Madison River |
| HUC12 Number | 100200070205 |
| Map | |
| Collection Day | 30 |
| Collection Month | 7 |
| Collection Year | 1996 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker |
| Status | established |
| Reference 1 |
| Ref. Number: | 19769 |
| Author: | Montana State University. |
| Date: | 2011 |
| Title: | New Zealand mudsnails in the Western USA dataset (1995-2010). |
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| Comments | density = abundant (51,022.2 +/- 27,685.5 individuals/m^2) |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
