Genus Sphaerochitina
- Species total:
- 126
- Age range:
- 4100 - 289 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Sphaerochitina brechyta | Arenigian | Arenigian |
|
| Sphaerochitina bifurcata | Early Devonian | Early Devonian |
|
| Sphaerochitina armillata | Early Devonian | Early Devonian |
|
| Sphaerochitina amazonica | Early Gothlandian | Early Gothlandian |
|
| Sphaerochitina actonica | Caradocian | Middle Caradocian |
|
| Sphaerochitina acanthifera | Ordovician | Emsian |
|
| Sphaerochitina | Precambriam | Late Devonian |
|