Stictosphaeridium |
Stictosphaeridium pectinale
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Stictosphaeridium |
Stictosphaeridium sinapticuliferum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Stictosphaeridium |
Stictosphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Synsphaeridium |
Synsphaeridium conglutinatum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Synsphaeridium |
Synsphaeridium sorediforme
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Trachysphaeridium |
Trachysphaeridium laminaritum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Trachysphaeridium |
Trachysphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |