Peteinosphaeridium |
Peteinosphaeridium paucifurcatum
|
USSR(Pre-Baltic) |
Tremadocian |
Early Wenlockian |
Peteinosphaeridium |
Peteinosphaeridium ravum
|
USSR(Russian Platform) |
Tremadocian |
Early Wenlockian |
Peteinosphaeridium |
Peteinosphaeridium ravum
|
USSR(Pre-Baltic) |
Tremadocian |
Early Wenlockian |
Peteinosphaeridium |
Peteinosphaeridium snigirevskaiae
|
USSR(Russian Platform) |
Tremadocian |
Early Wenlockian |
Peteinosphaeridium |
Peteinosphaeridium snigirevskaiae
|
USSR(Pre-Baltic) |
Tremadocian |
Early Wenlockian |
Pterospermopsis |
Pterospermopsis marginatus
|
USSR(Russian Platform) |
Llandoverian |
Ludlovian |
Pterospermopsis |
Pterospermopsis marginatus
|
USSR(Pre-Baltic) |
Llandoverian |
Ludlovian |
Pterospermopsis |
Pterospermopsis onondagaensis
|
USSR(Russian Platform) |
Llandoverian |
Ludlovian |
Pterospermopsis |
Pterospermopsis onondagaensis
|
USSR(Pre-Baltic) |
Llandoverian |
Ludlovian |
Rhytidodiacrodiaceae |
Rhytidodiacrodiaceae
|
USSR(Russian Platform) |
Tremadocian |
|
Rhytidodiacrodiaceae |
Rhytidodiacrodiaceae
|
USSR(Pre-Baltic) |
Tremadocian |
|
Schismatosphaeridium |
Schismatosphaeridium sp
|
USSR(Russian Platform) |
Ludlovian |
|
Schismatosphaeridium |
Schismatosphaeridium sp
|
USSR(Russian Platform) |
Caradocian |
Llandoverian |
Schismatosphaeridium |
Schismatosphaeridium sp
|
USSR(Pre-Baltic) |
Ludlovian |
|
Schismatosphaeridium |
Schismatosphaeridium sp
|
USSR(Pre-Baltic) |
Caradocian |
Llandoverian |
Sulcatosphaeridium |
Sulcatosphaeridium incrustatum
|
USSR(Russian Platform) |
Middle Cambrian |
Late Cambrian |
Sulcatosphaeridium |
Sulcatosphaeridium incrustatum
|
USSR(Pre-Baltic) |
Middle Cambrian |
Late Cambrian |