| Specimen ID | 117284 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Massac |
| Locality | Ohio River (R.M. 954.2), 1 mi. S of Hillerman, IL |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Ohio |
| HUC8 Number | 05140206 |
| HUC10 Name | Redstone Creek-Ohio River |
| HUC10 Number | 0514020607 |
| HUC12 Name | Redstone Creek-Ohio River |
| HUC12 Number | 051402060702 |
| Map | |
| Collection Day | 18 |
| Collection Month | 8 |
| Collection Year | 1994 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Record Type | Specimen |
| Disposal | preserved |
| Museum Cat Number | INHS 16285 |
| Verifier | Kevin Cummings, Illinois Natural History Survey |
| Freshwater/Marine | Freshwater |
| Number Collected | >100 |
