| Specimen ID | 1468140 |
| Group | Coelenterates-Hydrozoans |
| Genus | Craspedacusta |
| Species | sowerbii |
| Common Name | freshwater jellyfish |
| State | IL |
| County | La Salle |
| Locality | Quarry at Sheridan Rod and Gun Club, 1.5 N of Sheridan, Illinois, Fox River Drainage |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Fox |
| HUC8 Number | 07120007 |
| HUC10 Name | Roods Creek-Fox River |
| HUC10 Number | 0712000706 |
| HUC12 Name | Mission Creek-Fox River |
| HUC12 Number | 071200070605 |
| Map | |
| Collection Day | 22 |
| Collection Month | 8 |
| Collection Year | 1966 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on aquatic plants |
| Status | unknown |
| Reference 1 |
| Ref. Number: | 30026 |
| Author: | Walley, H.D. |
| Date: | 1972 |
| Title: | The fresh-water jellyfish, Craspedacusta sowerbyi in Illinois |
| Journal: | Transactions of the Illinois Academy of Science |
| Volume: | 65 |
| Pages: | 80-81 |
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| Comments | Discovered by Mr. Ivan Sams; "thousands" of specimens were visible on water surface, and 20 were collected; deposited in Walley private collection and N. Illinois University Invertebrate Collection |
| Record Type | Literature |
| Verifier | Walley, H.D. |
| Freshwater/Marine | Freshwater |
| Number Collected | 20 |
| Size | 15-25mm |
| Number of Females | 20 |
