Genus Trachysphaeridium
- Species total:
- 122
- Age range:
- 4100 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Trachysphaeridium sp. Reit.& Holl,1988 | Riphean | Early Vendian |
|
| Trachysphaeridium patellare | Precambriam | Vendian |
|
| Trachysphaeridium roblotum | Middle Riphean | Vendian |
|
| Trachysphaeridium decorum | Middle Precambrian | Late Precambrian |
|
| Trachysphaeridium laufeldii | Precambriam | Vendian |
|
| Trachysphaeridium apertum | Precambriam | Vendian |
|
| Trachysphaeridium minutum | Vendian | Early Cambrian |
|
| Trachysphaeridium prolixum | Middle Proterozoic | Early Cambrian |
|
| Trachysphaeridium sp.B | Late Precambrian | Early Cambrian |
|
| Trachysphaeridium bavlensum | Vendian | Early Cambrian |
|
| Trachysphaeridium partiale | Precambriam | Early Cambrian |
|
| Trachysphaeridium rigidulum | Middle Proterozoic | Early Cambrian |
|
| Trachysphaeridium bavlense | Precambriam | Early Cambrian |
|
| Trachysphaeridium asaphum | Middle Proterozoic | Early Cambrian |
|
| Trachysphaeridium ruminatum | Late Precambrian | Early Cambrian |
|
| Trachysphaeridium planum | Precambriam | Early Cambrian |
|
| Trachysphaeridium sp.A | Middle Proterozoic | Early Cambrian |
|