Genus Exiguisphaera
- Species total:
- 4
- Age range:
- 164.67 - 105 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Exiguisphaera | Hauterivian | Hauterivian |
|
| Exiguisphaera phragma | Late Bathonian | Middle Aptian |
|
| Exiguisphaera plectilis | Hauterivian | Aptian |
|
| Exiguisphaera sp | Oxfordian | Early Barremian |
|