Protosphaeridium |
Protosphaeridium discum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium paleaceum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium densum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium pectinale
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium sinapticuliferum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Kildinella |
Kildinella perforata
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium implexum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium sp
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Synsphaeridium |
Synsphaeridium sorediforme
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Orygmatosphaeridium |
Orygmatosphaeridium distributum
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Asperatopsophosphaera |
Asperatopsophosphaera sp
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Kildinella |
Kildinella sinica
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Kildinella |
Kildinella hyperboreica
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Kildinella |
Kildinella timanica
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|
Kildinella |
Kildinella tschapomica
|
USSR(Arkhangelsk Oblast) |
Early Riphean |
|