Genus Trachysphaeridium
- Species total:
- 122
- Age range:
- 4100 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Trachysphaeridium filamentum | Sinian | Sinian |
|
| Trachysphaeridium sp.3 Zhan.,1978 | Sinian | Silurian |
|
| Trachysphaeridium faveolatum | Sinian | Sinian |
|
| Trachysphaeridium pulchriforme | Sinian | Cambrian |
|
| Trachysphaeridium wangjiawanense | Sinian | Sinian |
|
| Trachysphaeridium concatervatum | Sinian | Sinian |
|
| Trachysphaeridium jayanense | Late Sinian | Late Sinian |
|
| Trachysphaeridium medium | Late Sinian | Late Sinian |
|
| Trachysphaeridium asaphym | Vendian | Vendian |
|
| Trachysphaeridium exilis | Early Vendian | Early Vendian |
|
| Trachysphaeridium parvilatum | Vendian | Vendian |
|
| Trachysphaeridium tenerum | Vendian | Vendian |
|
| Trachysphaeridium bavlensum | Vendian | Early Cambrian |
|
| Trachysphaeridium granosum | Early Vendian | Early Vendian |
|
| Trachysphaeridium foramine | Early Vendian | Early Vendian |
|
| Trachysphaeridium minutum | Vendian | Early Cambrian |
|
| Trachysphaeridium atteniatum | Late Vendian | Late Vendian |
|