Genus Downiesphaeridium
- Species total:
- 11
- Age range:
- 161.2 - 40.25 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Downiesphaeridium polyacanthum | Late Callovian | Early Ryazanian |
|
| Downiesphaeridium multispinosum | Early Albian | Late Coniacian |
|
| Downiesphaeridium aciculare | Late Hauterivian | Early Campanian |
|
| Downiesphaeridium armatum | Cenomanian | Early Campanian |
|
| Downiesphaeridium sp | Late Hauterivian | Early Maestrichtian |
|
| Downiesphaeridium | Aptian | Maestrichtian |
|
| Downiesphaeridium spinulastrum | Aptian | Middle Eocene |
|
| Downiesphaeridium bulbum | Eocene | Eocene |
|
| Downiesphaeridium flexuosum | Vraconian | Vraconian |
|
| Downiesphaeridium iaculigerum | Middle Kimmeridgian | Middle Kimmeridgian |
|
| Downiesphaeridium bergmannii | Late Danian | Late Danian |
|