Cyathochitina |
Cyathochitina
|
Nd |
Middle Tremadocian |
Late Siegenian |
Cyathochitina |
Cyathochitina calix
|
Africa |
Middle Llandeilian |
Late Llandeilian |
Cyathochitina |
Cyathochitina calix
|
North America |
Early Arenigian |
Late Llandeilian |
Cyathochitina |
Cyathochitina calix
|
Europe |
Llanvirnian |
|
Cyathochitina |
Cyathochitina campanulaeformis
|
Africa |
Llandeilian |
|
Cyathochitina |
Cyathochitina campanulaeformis
|
North America |
Late Llandeilian |
Late Ashgillian |
Cyathochitina |
Cyathochitina campanulaeformis
|
Europe |
Early Llanvirnian |
Late Llandeilian |
Cyathochitina |
Cyathochitina campanulaeformis
|
Europe |
Late Llandoverian |
Late Wenlockian |
Cyathochitina |
Cyathochitina campanulaeformis
|
Australia |
Early Llandeilian |
Middle Llandeilian |
Cyathochitina |
Cyathochitina dispar
|
Africa |
Llanvirnian |
|
Cyathochitina |
Cyathochitina dispar
|
North America |
Ashgillian |
|
Cyathochitina |
Cyathochitina dispar
|
Europe |
Early Taranakian |
Late Ludlovian |
Desmochitina |
Desmochitina
|
Nd |
Early Arenigian |
Early Couvinian |
Desmochitina |
Desmochitina bulla
|
Africa |
Early Llanvirnian |
Late Llandeilian |
Desmochitina |
Desmochitina minor
|
South America |
Early Gothlandian |
|
Desmochitina |
Desmochitina minor
|
North America |
Middle Llanvirnian |
Late Caradocian |
Desmochitina |
Desmochitina minor
|
North America |
Early Llandeilian |
Late Ashgillian |