Cymatiosphaeroides |
Cymatiosphaeroides kullingii
|
Arizona |
Precambriam |
|
Kildinella |
Kildinella
|
Montana |
Middle Proterozoic |
|
Kildinosphaera |
Kildinosphaera
|
Montana |
Middle Proterozoic |
|
Kildinosphaera |
Kildinosphaera chagrinata
|
Arizona |
Precambriam |
|
Kildinosphaera |
Kildinosphaera lophostriata
|
Arizona |
Precambriam |
|
Kildinosphaera |
Kildinosphaera verrucata
|
Arizona |
Precambriam |
|
Leiosphaeridia |
Leiosphaeridia
|
Montana |
Middle Proterozoic |
|
Leiosphaeridia |
Leiosphaeridia asperata
|
Arizona |
Precambriam |
|
Leiosphaeridia |
Leiosphaeridia sp
|
Arizona |
Precambriam |
|
Satka |
Satka
|
Montana |
Middle Proterozoic |
|
Satka |
Satka colonialica
|
Arizona |
Precambriam |
|
Siphonophycus |
Siphonophycus beltensis
|
Montana |
Middle Proterozoic |
|
Siphonophycus |
Siphonophycus crassiusculum
|
Montana |
Middle Proterozoic |
|
Siphonophycus |
Siphonophycus kestron
|
Montana |
Middle Proterozoic |
|
Stictosphaeridium |
Stictosphaeridium sp
|
Arizona |
Precambriam |
|
Synsphaeridium |
Synsphaeridium sp
|
Arizona |
Precambriam |
|
Tasmanites |
Tasmanites rifejicus
|
Arizona |
Precambriam |
|