| Name | From | To | Age range |
|---|---|---|---|
| Obtusisporis | Scythian | Senonian |
|
| Obtusisporis apilobatus | Middle Albian | Early Cenomanian |
|
| Obtusisporis canadensis | Early Triassic | Albian |
|
| Obtusisporis concavus | Late Jurassic | Late Jurassic |
|
| Obtusisporis convexus | Aalenian | Bathonian |
|
| Obtusisporis corniculata | Late Jurassic | Hauterivian |
|
| Obtusisporis corniger | Jurassic | Bathonian |
|
| Obtusisporis dakotensis | Middle Albian | Early Cenomanian |
|
| Obtusisporis divisitorus | Hettangian | Cretaceous |
|
| Obtusisporis fossulatus | Tithonian | Tithonian |
|
| Obtusisporis hexagonalis | Hettangian | Hettangian |
|
| Obtusisporis juncta | Early Gothlandian | Early Eocene |
|
| Obtusisporis jurienensis | Early Sinemurian | Early Sinemurian |
|
| Obtusisporis kara-murzae | Toarcian | Toarcian |
|
| Obtusisporis labratus | Cenomanian | Oligocene |
|
| Obtusisporis laeviconcavus | Cretaceous | Tertiary |
|
| Obtusisporis laevigata | Middle Jurassic | Middle Jurassic |
|