| argentina | | stephanoprora uruguayense | species | 8 | 0 |
| argentina | buenos aires city | stephanoprora uruguayense | species | 0 | 1 |
| brazil | rio de janeiro | stephanoprora uruguayense | species | 88 | 0 |
| brazil | rio grande do sul | stephanoprora uruguayense | species | 0 | 1 |
| poland | west pomerania province | stephanoprora pseudoechinata | species | 0 | 2 |
| russia | | stephanoprora chasanensis | species | 4 | 0 |
| ukraine | kherson oblast | stephanoprora pseudoechinata | species | 6 | 0 |
| united states | louisiana | stephanoprora pseudoechinata | species | 4 | 0 |
| united states | north dakota | stephanoprora sp. 1 vvt-2015 | species | 1 | 0 |
| united states | north dakota | stephanoprora sp. 2 vvt-2015 | species | 1 | 0 |