Genus Trachysphaeridium
- Species total:
- 122
- Age range:
- 4100 - 54.5 MA (obsolete dating)
- IRMNG:
- find
Name | From | To | Age range |
---|---|---|---|
Trachysphaeridium complanatum | Middle Proterozoic | Middle Proterozoic |
|
Trachysphaeridium phalanxum | Late Llandoverian | Late Llandoverian |
|
Trachysphaeridium granulatum | Proterozoic | Proterozoic |
|
Trachysphaeridium filamentum | Sinian | Sinian |
|
Trachysphaeridium rude | Precambriam | Precambriam |
|
Trachysphaeridium dalongkouense | Middle Proterozoic | Middle Proterozoic |
|
Trachysphaeridium araneosum | Precambriam | Precambriam |
|
Trachysphaeridium laminaritum | Precambriam | Thanetian |
|
Trachysphaeridium | Precambriam | Permian |
|
Trachysphaeridium sp | Precambriam | Carboniferous |
|
Trachysphaeridium sp.4 | Precambriam | Middle Carboniferous |
|
Trachysphaeridium sp.3 | Precambriam | Middle Carboniferous |
|
Trachysphaeridium sp.1 | Precambriam | Middle Carboniferous |
|
Trachysphaeridium sp.2 | Precambriam | Middle Carboniferous |
|
Trachysphaeridium rugosum | Precambriam | Early Carboniferous |
|
Trachysphaeridium attenuatum | Precambriam | Devonian |
|
Trachysphaeridium leptodermum | Middle Llandoverian | Middle Devonian |
|