Protosphaeridium |
Protosphaeridium sp
|
Spain |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium tuberculiferum
|
Morocco |
Late Riphean |
|
Protosphaeridium |
Protosphaeridium tuberculiferum
|
Canada(Newfoundland) |
Middle Riphean |
|
Protosphaeridium |
Protosphaeridium tuberculiferum
|
France |
Riphean |
|
Protosphaeridium |
Protosphaeridium tuberculiferum
|
England |
Middle Riphean |
|
Protosphaeridium |
Protosphaeridium tuberculiferum
|
Spain |
Early Riphean |
|
Scaphita |
Scaphita sp
|
Morocco |
Late Riphean |
|
Scaphita |
Scaphita sp
|
Canada(Newfoundland) |
Middle Riphean |
|
Scaphomorphida |
Scaphomorphida
|
France |
Middle Riphean |
|
Sphaerocongregus |
Sphaerocongregus variabilis
|
France |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium sp
|
Morocco |
Late Riphean |
|
Stictosphaeridium |
Stictosphaeridium sp
|
France |
Middle Riphean |
|
Symplassosphaeridium |
Symplassosphaeridium
|
France |
Early Riphean |
|
Symplassosphaeridium |
Symplassosphaeridium sp
|
Morocco |
Middle Riphean |
|
Synsphaeridium |
Synsphaeridium
|
Canada(Newfoundland) |
Middle Riphean |
|
Synsphaeridium |
Synsphaeridium sp
|
France |
Late Riphean |
|
Synsphaeridium |
Synsphaeridium sp
|
France |
Early Riphean |
|