Genus Zonate forms
- Species total:
- 3
- Age range:
- 378.33 - 82 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Zonate forms | Late Siegenian | Aalenian |
|
| Zonate forms sp.1 | Cenomanian | Coniacian |
|
| Zonate forms sp.A | Eifelian | Eifelian |
|