Ethmosphaeridium |
Ethmosphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Ethmosphaeridium |
Ethmosphaeridium tungusum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Favososphaeridium |
Favososphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Kildinella |
Kildinella hyperboreica
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Kildinella |
Kildinella jacutica
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Leiosphaeridium |
Leiosphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Orygmatosphaeridium |
Orygmatosphaeridium distributum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium ace
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium clarum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium densum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium nervatum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium planum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Protosphaeridium |
Protosphaeridium tuberculiferum
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |
Pterospermopsimorpha |
Pterospermopsimorpha sp
|
USSR(Yakut ASSR) |
Early Riphean |
Middle Riphean |