Protosphaeridium |
Protosphaeridium densum
|
USSR |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(WSL) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(Urals) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(Irkutskaya Oblast) |
Proterozoic |
|
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium gibberosum
|
USSR |
Proterozoic |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Murmansk) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(WSL) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Yakut ASSR) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Irkutskaya Oblast) |
Proterozoic |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Ukrainian SSR) |
Proterozoic |
|
Protosphaeridium |
Protosphaeridium paleaceum
|
USSR(WSL) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium papyraceum
|
USSR(WSL) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium parvulum
|
USSR(Yakut ASSR) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium parvulum
|
USSR(Urals) |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium parvulum
|
USSR |
Late Proterozoic |
|
Protosphaeridium |
Protosphaeridium pusillum
|
USSR(WSL) |
Late Proterozoic |
|