Symplassosphaeridium |
Symplassosphaeridium specusum
|
Nd |
Early Cambrian |
|
Symplassosphaeridium |
Symplassosphaeridium subcoalitum
|
Nd |
Late Cambrian |
|
Symplassosphaeridium |
Symplassosphaeridium tumidulum
|
Nd |
Late Cambrian |
|
Symplassosphaeridium |
Symplassosphaeridium undosum
|
Nd |
Early Riphean |
|
Synsphaeridium |
Synsphaeridium
|
Nd |
Nd |
|
Synsphaeridium |
Synsphaeridium
|
Nd |
Nd |
|
Synsphaeridium |
Synsphaeridium
|
Nd |
Nd |
|
Synsphaeridium |
Synsphaeridium catenarium
|
Australia(W.Australia) |
Frasnian |
|
Synsphaeridium |
Synsphaeridium compactum
|
Nd |
Bashkirian |
|
Synsphaeridium |
Synsphaeridium conglutinatum
|
Nd |
Proterozoic |
Middle Ordovician |
Synsphaeridium |
Synsphaeridium conglutinatum
|
Nd |
Nd |
|
Synsphaeridium |
Synsphaeridium favosum
|
China |
Late Precambrian |
|
Synsphaeridium |
Synsphaeridium gotlandicum
|
Nd |
Wenlockian |
|
Synsphaeridium |
Synsphaeridium imbecillum
|
Nd |
Vendian |
|
Synsphaeridium |
Synsphaeridium paulum
|
Nd |
Nd |
|
Synsphaeridium |
Synsphaeridium rarum
|
Nd |
Bashkirian |
|
Synsphaeridium |
Synsphaeridium ruminatum
|
Nd |
Vendian |
|