| Specimen ID | 275890 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | MT |
| County | Park |
| Locality | Yellowstone River, McConnell Landing |
| Mapping Accuracy | Accurate |
| HUC8 Name | Yellowstone Headwaters |
| HUC8 Number | 10070001 |
| HUC10 Name | Gardner River-Yellowstone River |
| HUC10 Number | 1007000109 |
| HUC12 Name | Reese Creek-Yellowstone River |
| HUC12 Number | 100700010907 |
| Map | |
| Collection Day | 22 |
| Collection Month | 11 |
| Collection Year | 2002 |
| 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. The nzms were very abundant locally, especially since none were see here in April. This is most likely a annual population cycle starting in the Gardner River and working downstream. The snails rapidly thin out moving downstream. |
| Record Type | Literature |
| Museum Cat Number | G1319 |
| Freshwater/Marine | Freshwater |
