| Specimen ID | 50410 |
| Group | Mollusks-Gastropods |
| Genus | Marisa |
| Species | cornuarietis |
| Common Name | giant ramshorn |
| State | TX |
| County | Hays |
| Locality | San Marcos River, in a municipal park in San Marcos |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Marcos |
| HUC8 Number | 12100203 |
| HUC10 Name | Upper San Marcos River |
| HUC10 Number | 1210020303 |
| HUC12 Name | Purgatory Creek-San Marcos River |
| HUC12 Number | 121002030302 |
| Map | |
| Collection Month | 6 |
| Collection Year | 1983 |
| Year Accuracy | Actual |
| Potential Pathway | released aquarium |
| Status | collected |
| Reference 1 |
| Ref. Number: | 23818 |
| Author: | Neck, R.W. |
| Date: | 1984 |
| Title: | Occurrence of the striped ram's horn snail, Marisa cornuarietis, in central Texas (Ampullariidae). |
| Journal: | The Nautilus |
| Volume: | 98 |
| Issue: | 3 |
| Pages: | 119-120 |
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| Reference 2 |
| Ref. Number: | 360 |
| Author: | Howells, R.G. |
| Date: | 1992 |
| Title: | Annotated list of non-native fishes, mollusks, crustaceans, and aquatic plants, in Texas waters. Management Data Series No. 78. |
| Publisher: | Texas Parks and Wildlife Department |
| Pages: | 19 p. |
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| Record Type | Literature |
| Freshwater/Marine | Freshwater |
| Number Collected | 12 |
| Year Class | adults and juveniles |
