Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Kildinella |
Kildinella sinica
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Kildinella |
Kildinella hyperboreica
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Kildinella |
Kildinella vesljanica
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Kildinella |
Kildinella sp
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Protosphaeridium |
Protosphaeridium sp
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Kildinella |
Kildinella timanica
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Kildinella |
Kildinella magna
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Trachysphaeridium |
Trachysphaeridium
|
USSR(Arkhangelsk Oblast) |
Riphean |
Early Cambrian |
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Protosphaeridium |
Protosphaeridium densum
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Kildinella |
Kildinella tschapomica
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Kildinella |
Kildinella miroedichia
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Pterospermopsimorpha |
Pterospermopsimorpha pileiformis
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Nucellosphaeridium |
Nucellosphaeridium bellum
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Stictosphaeridium |
Stictosphaeridium implexum
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Trachysphaeridium |
Trachysphaeridium uspenskyi
|
USSR(Arkhangelsk Oblast) |
Riphean |
|