Genus Trachysphaeridium
- Species total:
- 122
- Age range:
- 4100 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Trachysphaeridium dalkiense | Middle Algonkian | Middle Algonkian |
|
| Trachysphaeridium sp.B | Late Precambrian | Early Cambrian |
|
| Trachysphaeridium favosum | Late Precambrian | Late Precambrian |
|
| Trachysphaeridium irregularium | Late Precambrian | Late Precambrian |
|
| Trachysphaeridium debilum | Late Precambrian | Baoto |
|
| Trachysphaeridium ruminatum | Late Precambrian | Early Cambrian |
|
| Trachysphaeridium magnum | Late Precambrian | Late Precambrian |
|
| Trachysphaeridium sp. Kuma.& Sriv.,1995 | Late Precambrian | Late Precambrian |
|
| Trachysphaeridium mediale | Late Precambrian | Cambrian |
|
| Trachysphaeridium maicum | Riphean | Riphean |
|
| 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 lachandinum | Riphean | Riphean |
|
| Trachysphaeridium myctum | Late Proterozoic | Cambrian |
|
| Trachysphaeridium gibbosum | Late Proterozoic | Cambrian |
|
| Trachysphaeridium sp. Reit.& Holl,1988 | Riphean | Early Vendian |
|