Genus Trachysphaeridium
- Species total:
- 122
- Age range:
- 4100 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Trachysphaeridium concatervatum | Sinian | Sinian |
|
| Trachysphaeridium scadrum | Sinian | Sinian |
|
| Trachysphaeridium angulatum | Sinian | Silurian |
|
| Trachysphaeridium sp.1 Zhan.,1978 | Sinian | Silurian |
|
| Trachysphaeridium caoshanense | Sinian | Sinian |
|
| Trachysphaeridium sp.2 Zhan.,1978 | Sinian | Silurian |
|
| Trachysphaeridium conglomeratum | Sinian | Sinian |
|
| Trachysphaeridium striatum | Sinian | Sinian |
|
| Trachysphaeridium sp.4 Zhan.,1978 | Sinian | Silurian |
|
| Trachysphaeridium reticuloideum | Sinian | Sinian |
|
| Trachysphaeridium adornatum | Sinian | Sinian |
|
| Trachysphaeridium robustum | Sinian | Sinian |
|
| Trachysphaeridium opacum | Sinian | Silurian |
|
| Trachysphaeridium filamentum | Sinian | Sinian |
|
| Trachysphaeridium sp.3 Zhan.,1978 | Sinian | Silurian |
|
| Trachysphaeridium salebrosum | Late Riphean | Late Riphean |
|
| Trachysphaeridium roblotum | Middle Riphean | Vendian |
|