Actinotodissus |
Actinotodissus sicaformis
|
USSR(Arkhangelsk Oblast) |
Tremadocian |
|
Dictyotidium |
Dictyotidium operculatum
|
USSR(Arkhangelsk Oblast) |
Tremadocian |
|
Dictyotidium |
Dictyotidium operculatum
sp. nov. |
USSR(Estonian SSR) |
Tremadocian |
|
Dictyotidium |
Dictyotidium sp
|
USSR(Arkhangelsk Oblast) |
Tremadocian |
|
Raphesphaera |
Raphesphaera striatula
sp. nov. |
USSR(Estonian SSR) |
Tremadocian |
|
Raphesphaera |
Raphesphaera striatula
|
USSR(Leningrad) |
Late Cambrian |
|
Raphesphaera |
Raphesphaera striatula
|
USSR(Estonian SSR) |
Late Cambrian |
Tremadocian |
Stellechinatum |
Stellechinatum sicaforme
|
USSR(Arkhangelsk Oblast) |
Tremadocian |
|
Vesiculosphaera |
Vesiculosphaera
|
USSR(Arkhangelsk Oblast) |
Tremadocian |
|
Vesiculosphaera |
Vesiculosphaera tetragonia
sp. nov. |
USSR(Arkhangelsk Oblast) |
Tremadocian |
|
Vesiculosphaera |
Vesiculosphaera tetragonia
|
USSR(Estonian SSR) |
Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera sp
|
USSR(Estonian SSR) |
Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera sp. Boro.et al,1984
sp. nov. |
USSR(Estonian SSR) |
Tremadocian |
|