Genus Micrhystridium
- Species total:
- 558
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Micrhystridium ferox | Santonian | Santonian |
|
| Micrhystridium sp.9 | Middle Pridolian | Middle Pridolian |
|
| Micrhystridium antarcticum | Nd | Nd |
|
| Micrhystridium oligarifmum | Silurian | Silurian |
|
| Micrhystridium tumultus | Maastrichtian | Maastrichtian |
|
| Micrhystridium polorum | Llandoverian | Llandoverian |
|
| Micrhystridium dictyophorum | Bajocian | Bajocian |
|
| Micrhystridium heterospinosum | Early Cambrian | Early Cambrian |
|
| Micrhystridium assuetum | Silurian | Silurian |
|
| Micrhystridium rarispinosum | Toarcian | Toarcian |
|
| Micrhystridium hirticulum | Richmondian | Richmondian |
|
| Micrhystridium stylosum | Ludlovian | Ludlovian |
|
| Micrhystridium parvimentum | Coniacian | Coniacian |
|
| Micrhystridium ciliatum | Early Cretaceous | Early Cretaceous |
|
| Micrhystridium sp.8 | Middle Pridolian | Middle Pridolian |
|
| Micrhystridium duplex | Cambrian | Cambrian |
|
| Micrhystridium evansii | Permian | Permian |
|