Genus Trachysphaeridium
- Species total:
- 122
- Age range:
- 4100 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Trachysphaeridium timofeevii | Precambriam | Middle Cambrian |
|
| Trachysphaeridium leve | Precambriam | Middle Cambrian |
|
| Trachysphaeridium sp.2 Ouya.et al,1974 | Late Proterozoic | Cambrian |
|
| Trachysphaeridium pulchriforme | Sinian | Cambrian |
|
| Trachysphaeridium mediale | Late Precambrian | Cambrian |
|
| Trachysphaeridium kryshtofovichii | Late Proterozoic | Cambrian |
|
| Trachysphaeridium sp.1 Ouya.et al,1974 | Late Proterozoic | Cambrian |
|
| Trachysphaeridium sp.3 Ouya.et al,1974 | Late Proterozoic | Cambrian |
|
| Trachysphaeridium sp. Ouya.et al,1974 | Late Proterozoic | Cambrian |
|
| Trachysphaeridium myctum | Late Proterozoic | Cambrian |
|
| Trachysphaeridium gibbosum | Late Proterozoic | Cambrian |
|
| Trachysphaeridium nevelense | Late Proterozoic | Cambrian |
|
| Trachysphaeridium minor | Precambriam | Arenigian |
|
| Trachysphaeridium simplex | Precambriam | Arenigian |
|
| Trachysphaeridium scabrum | Precambriam | Llanvirnian |
|
| Trachysphaeridium debilum | Late Precambrian | Baoto |
|
| Trachysphaeridium tschapomicus | Late Caradocian | Ashgillian |
|