Vulcanisphaera |
Vulcanisphaera britannica
|
Poland |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
England |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
France |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Belgium |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Spain |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Italy |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Canada(Newfoundland) |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Iran |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Africa(N.Africa) |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera britannica
|
Argentina |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
Poland |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
England |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
France |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
Belgium |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
Spain |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
Italy |
Early Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera imparilis
|
Canada(Newfoundland) |
Early Tremadocian |
|