Sulcatosphaeridium |
Sulcatosphaeridium sp
|
USSR(Russian Platform) |
Tremadocian |
Ludlovian |
Sulcatosphaeridium |
Sulcatosphaeridium sp
|
USSR(Pre-Baltic) |
Tremadocian |
Ludlovian |
Tasmanites |
Tasmanites sp
|
USSR(Russian Platform) |
Llandoverian |
Ludlovian |
Tasmanites |
Tasmanites sp
|
USSR(Russian Platform) |
Tremadocian |
Caradocian |
Tasmanites |
Tasmanites sp
|
USSR(Pre-Baltic) |
Llandoverian |
Ludlovian |
Tasmanites |
Tasmanites sp
|
USSR(Pre-Baltic) |
Tremadocian |
Caradocian |
Trachymarginata |
Trachymarginata delicata
|
USSR(Russian Platform) |
Cambrian |
Ludlovian |
Trachymarginata |
Trachymarginata delicata
|
USSR(Pre-Baltic) |
Cambrian |
Ludlovian |
Trachymarginata |
Trachymarginata socolovi
|
USSR(Russian Platform) |
Cambrian |
Ludlovian |
Trachymarginata |
Trachymarginata socolovi
|
USSR(Pre-Baltic) |
Cambrian |
Ludlovian |
Trachypsophosphaera |
Trachypsophosphaera sp
|
USSR(Russian Platform) |
Cambrian |
Ludlovian |
Trachypsophosphaera |
Trachypsophosphaera sp
|
USSR(Pre-Baltic) |
Cambrian |
Ludlovian |
Trachysphaeridium |
Trachysphaeridium rugellosum
|
USSR(Russian Platform) |
Llanvirnian |
Ludlovian |
Trachysphaeridium |
Trachysphaeridium rugellosum
|
USSR(Pre-Baltic) |
Llanvirnian |
Ludlovian |
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Russian Platform) |
Tremadocian |
Arenigian |
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Russian Platform) |
Early Wenlockian |
Ludlovian |
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Russian Platform) |
Caradocian |
Ludlovian |