Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium tener
|
Nd |
Early Ordovician |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium testudine
|
China(SW.China) |
Sinian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium triplicatum
|
Nd |
Late Cambrian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium triviale
|
Nd |
Middle Cambrian |
Late Cambrian |
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium truncatum
|
Nd |
Sinian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium unguisum
|
USSR(Pre-Baltic) |
Late Cambrian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium vastum
|
Nd |
Early Cambrian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium vologdense
|
Nd |
Early Cambrian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium waltzii
|
Nd |
Late Cambrian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium zalesskyi
|
Nd |
Late Cambrian |
Early Ordovician |
Archaeomassulina |
Archaeomassulina
|
Nd |
Nd |
|
Archaeomassulina |
Archaeomassulina reticularis
|
Nd |
Nd |
|
Archaeomassulina |
Archaeomassulina typica
|
USSR |
Early Cambrian |
|
Archaeoperisaccus |
Archaeoperisaccus
|
Nd |
Nd |
|
Archaeoperisaccus |
Archaeoperisaccus balticus
|
Nd |
Nd |
|
Archaeopertusina |
Archaeopertusina
|
Nd |
Nd |
|
Archaeopertusina |
Archaeopertusina atava
|
Nd |
Late Riphean |
|