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 |
|