| When does are bred on multiple heat cycles, it may appear that superfetation has occurred due to fetal sizes and maturity differences. |
| The topmost photo at right is of an ovary of the species Poeciliopsis presidionis, which has superfetation and extensive maternal provisioning. |
| Superfetation is more rare than superfecundation. Only a couple of cases have been described. These superfetation cases were both homopateral. |
| We emphasize that all the females that we dissected contained a single brood of developing embryos, indicating the lack of superfetation in this species. |
| So when I told him of superfetation, he looked at me like I was crazy. |
