Sphaerochitina |
Sphaerochitina brevispinosa
|
Baltic |
Ordovician |
Silurian |
Sphaerochitina |
Sphaerochitina capillata
|
USSR(Baltic) |
Silurian |
|
Sphaerochitina |
Sphaerochitina collinsoni
|
Iowa |
Middle Devonian |
|
Sphaerochitina |
Sphaerochitina comosa
|
Algeria |
Middle Devonian |
|
Sphaerochitina |
Sphaerochitina compactilis
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina complanata
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina cuvillieri
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina eisenacki
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina fenestrata
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina hirsuta
|
Sweden |
Caradocian |
|
Sphaerochitina |
Sphaerochitina implicationis
|
Iowa |
Middle Devonian |
|
Sphaerochitina |
Sphaerochitina lateris
|
E.Germany |
Middle Ordovician |
|
Sphaerochitina |
Sphaerochitina llorona
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina longicollis
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina lucianoi
|
Nd |
Nd |
|
Sphaerochitina |
Sphaerochitina makromyka
|
Ohio |
Late Ordovician |
|
Sphaerochitina |
Sphaerochitina mundana
|
Nd |
Nd |
|