| Specimen ID | 153701 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | MT |
| County | Madison |
| Locality | Madison River about 1/4 mile upstream of Norris Bridge [Rt. 84 near Norris, MT] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Madison |
| HUC8 Number | 10020007 |
| HUC10 Name | Elk Creek-Madison River |
| HUC10 Number | 1002000715 |
| HUC12 Name | Cold Spring Creek-Madison River |
| HUC12 Number | 100200071502 |
| Map | |
| Collection Day | 18 |
| Collection Month | 3 |
| Collection Year | 2002 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker |
| Status | established |
| Reference 1 |
| Ref. Number: | 13644 |
| Author: | Richards, D., B. Kerans, and D. Gustafson. |
| Date: | 2003 |
| Title: | New Zealand mudsnail in the Western USA, Chronology of important New Zealand mudsnail discoveries. |
| Publisher: | Montana State University, Dept of Ecology. |
| Issue: | http://wwwesgmontanaedu/aim/mollusca/nzms/ |
|
|
| Reference 2 |
| Ref. Number: | 19769 |
| Author: | Montana State University. |
| Date: | 2011 |
| Title: | New Zealand mudsnails in the Western USA dataset (1995-2010). |
|
|
| Comments | August 2001, the power company found just 1 snail at this site. In March the density is estimated to be about 10/sq. m. |
| Record Type | Literature |
| Verifier | Richards, David |
| Freshwater/Marine | Freshwater |
