Protosphaeridium |
Protosphaeridium tuberculiferum
|
USSR(Pre-Urals) |
Early Proterozoic |
Middle Proterozoic |
Pterospermopsimorpha |
Pterospermopsimorpha sp
|
USSR(Pre-Urals) |
Precambriam |
Cambrian |
Pulvinomorpha |
Pulvinomorpha sp
|
USSR(Pre-Urals) |
Vendian |
|
Scaphita |
Scaphita sp
|
USSR(Pre-Urals) |
Middle Riphean |
Cambrian |
Scaphospinosa |
Scaphospinosa sp
|
USSR(Pre-Urals) |
Middle Cambrian |
|
Spiromorpha |
Spiromorpha sp
|
USSR(Pre-Urals) |
Vendian |
|
Stictosphaeridium |
Stictosphaeridium implexum
|
USSR(Pre-Urals) |
Middle Riphean |
|
Stictosphaeridium |
Stictosphaeridium pectinale
|
USSR(Pre-Urals) |
Early Proterozoic |
Middle Proterozoic |
Stictosphaeridium |
Stictosphaeridium sinapticuliferum
|
USSR(Belgorod) |
Early Proterozoic |
Middle Proterozoic |
Stictosphaeridium |
Stictosphaeridium sinapticuliferum
|
USSR(Pre-Urals) |
Riphean |
|
Stictosphaeridium |
Stictosphaeridium sp
|
USSR(Pre-Urals) |
Precambriam |
Cambrian |
Symplassosphaeridium |
Symplassosphaeridium sp
|
USSR(Pre-Urals) |
Precambriam |
Cambrian |
Synsphaeridium |
Synsphaeridium sp
|
USSR(Pre-Urals) |
Precambriam |
Cambrian |
Tasmanites |
Tasmanites sp
|
USSR(Pre-Urals) |
Vendian |
Cambrian |
Tetraedrixium |
Tetraedrixium sp
|
USSR(Pre-Urals) |
Vendian |
|
Toromorpha |
Toromorpha sp
|
USSR(Pre-Urals) |
Vendian |
|
Trachydiacrodium |
Trachydiacrodium sp
|
USSR(Pre-Urals) |
Middle Cambrian |
Late Cambrian |