Sphaerochitina |
Sphaerochitina schwalbi
|
Asia |
Givetian |
|
Sphaerochitina |
Sphaerochitina sphaerocephala
|
Europe |
Llandoverian |
Ludlovian |
Sphaerochitina |
Sphaerochitina sphaerocephala
|
Africa |
Gedinnian |
|
Sphaerochitina |
Sphaerochitina sphaerocephala
|
Europe |
Llandoverian |
Emsian |
Sphaerochitina |
Sphaerochitina sphaerocephala
|
Africa |
Middle Devonian |
Late Devonian |
Sphaerochitina |
Sphaerochitina spinipes
|
Europe |
Ludlovian |
|
Sphaerochitina |
Sphaerochitina vitrea
|
Europe |
Llandoverian |
Ludlovian |
Sphaerochitina |
Sphaerochitina vitrea
|
Africa |
Llandoverian |
|
Stephanochitina |
Stephanochitina africana
|
Africa |
Middle Devonian |
|
Stephanochitina |
Stephanochitina decora
|
North America |
Late Devonian |
|
Stephanochitina |
Stephanochitina decora
|
Asia |
Late Devonian |
|
Tanuchitina |
Tanuchitina ontariensis
|
North America |
Caradocian |
|
Tanuchitina |
Tanuchitina ontariensis
|
Asia |
Caradocian |
|
Urochitina |
Urochitina globosa
|
Africa |
Emsian |
|
Urochitina |
Urochitina simplex
|
Africa |
Emsian |
|
Urochitina |
Urochitina verrucosa
|
Africa |
Emsian |
|
Velatachitina |
Velatachitina copulata
|
Africa |
Ordovician |
|