Genus Genus a
- Species total:
- 8
- Age range:
- 435 - 163.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Genus a | Gedinnian | Bathonian |
|
| Genus a duna.,1972 | Norian | Norian |
|
| Genus a sp. Duna.,1972 | Late Triassic | Late Triassic |
|
| Genus A sp.1 | Llandoverian | Ludlovian |
|
| Genus a sp.A | Gedinnian | Gedinnian |
|
| Genus A sp.A Bint & Mars.,1994 | Nd | Nd |
|
| Genus A sp.A Stee.et al,2000 | Rhuddanian | Rhuddanian |
|
| Genus A sp.B | Rhuddanian | Rhuddanian |
|