| canada | | schistosomatium aff. douthitti mag-2016 | species | 1 | 0 |
| canada | | schistosomatium douthitti | species | 2 | 0 |
| canada | ontario | schistosomatium | genus | 0 | 1 |
| canada | ontario | schistosomatium douthitti | species | 0 | 1 |
| united states | | schistosomatium douthitti | species | 4 | 0 |
| united states | alaska | schistosomatium | genus | 0 | 1 |
| united states | alaska | schistosomatium douthitti | species | 0 | 1 |
| united states | michigan | schistosomatium | genus | 0 | 1 |
| united states | michigan | schistosomatium douthitti | species | 0 | 1 |
| united states | wisconsin | schistosomatium | genus | 0 | 1 |
| united states | wisconsin | schistosomatium douthitti | species | 0 | 1 |