Genus Micrhystridium
- Species total:
- 558
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Micrhystridium minus | Oligocene | Oligocene |
|
| Micrhystridium minusculum | Arenigian | Arenigian |
|
| Micrhystridium minutispinosum | Late Norian | Liassic |
|
| Micrhystridium minutispinum | Early Triassic | Middle Turonian |
|
| Micrhystridium minutum | Late Precambrian | Early Cambrian |
|
| Micrhystridium miserum | Oligocene | Oligocene |
|
| Micrhystridium modestum | Middle Jurassic | Late Neogene |
|
| Micrhystridium morenensis | Late Cambrian | Arenigian |
|
| Micrhystridium mucronatum | Early Ludlovian | Early Ludlovian |
|
| Micrhystridium multiangulare | Early Paleozoic | Early Ordovician |
|
| Micrhystridium multipilosum | Ordovician | Ordovician |
|
| Micrhystridium multiradiale | Late Caradocian | Ashgillian |
|
| Micrhystridium multispinosum | Paleozoic | Paleozoic |
|
| Micrhystridium nannacanthum | Late Proterozoic | Late Eocene |
|
| Micrhystridium nanodigitatum | Middle Ordovician | Middle Ordovician |
|
| Micrhystridium nanum | Middle Ordovician | Telychian |
|
| Micrhystridium nanus | Nd | Nd |
|