Bursachitina |
Bursachitina cylindrica
|
Europe |
Caradocian |
|
Bursachitina |
Bursachitina globosa
|
USA |
Eifelian |
Givetian |
Bursachitina |
Bursachitina globosa
|
USA |
Eifelian |
Givetian |
Bursachitina |
Bursachitina globosa
|
Algeria |
Middle Devonian |
|
Bursachitina |
Bursachitina inflata
|
Europe |
Caradocian |
|
Bursachitina |
Bursachitina inflata
|
France(Aquitaine) |
Llandeilian |
|
Bursachitina |
Bursachitina lagenomorpha
|
Africa(Sahara) |
Arenigian |
Llandeilian |
Bursachitina |
Bursachitina lagenomorpha
|
USA |
Llandeilian |
Caradocian |
Bursachitina |
Bursachitina lagenomorpha
|
Baltic |
Late Gothlandian |
|
Bursachitina |
Bursachitina oelandica
|
Europe |
Early Llandoverian |
Middle Llandoverian |
Bursachitina |
Bursachitina oelandica
|
Africa(Sahara) |
Gothlandian |
|
Bursachitina |
Bursachitina oelandica
|
Sweden |
Early Caradocian |
|
Bursachitina |
Bursachitina pachygaster
|
Africa(Sahara) |
Givetian |
|
Bursachitina |
Bursachitina pachygaster
|
Africa(Sahara) |
Givetian |
|
Bursachitina |
Bursachitina rhenana
|
W.Germany(Rhineland) |
Ordovician |
|
Bursachitina |
Bursachitina rhenana
|
Europe |
Tremadocian |
Caradocian |
Bursachitina |
Bursachitina sp
|
Africa(Sahara) |
Silurian |
Devonian |