Genus Problematica
- Species total:
- 6
- Age range:
- 408.33 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Problematica | Paleocene | Paleocene |
|
| Problematica assereto | Late Rhaetian | Late Rhaetian |
|
| Problematica sp | Late Emsian | Late Emsian |
|
| Problematica sp.5a | Late Gothlandian | Late Gothlandian |
|
| Problematica sp.A | Permian | Permian |
|
| Problematica sp.B | Permian | Permian |
|