Polygonium |
Polygonium sexradiatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Polygonium |
Polygonium sp
|
USSR(Leningrad) |
Late Cambrian |
|
Pterospermella |
Pterospermella sp
|
USSR(Leningrad) |
Late Cambrian |
|
Raphesphaera |
Raphesphaera
|
USSR(Russian Platform) |
Late Cambrian |
|
Raphesphaera |
Raphesphaera obsoleta
sp. nov. |
USSR(Estonian SSR) |
Late Cambrian |
|
Raphesphaera |
Raphesphaera spinulifera
|
USSR(Yaroslav) |
Middle Cambrian |
Late Cambrian |
Raphesphaera |
Raphesphaera spinulifera
sp. nov. |
USSR(Russian Platform) |
Late Cambrian |
|
Raphesphaera |
Raphesphaera spinulifera
|
USSR(Leningrad) |
Middle Cambrian |
Late Cambrian |
Raphesphaera |
Raphesphaera spinulifera
|
USSR(Estonian SSR) |
Middle Cambrian |
Late Cambrian |
Raphesphaera |
Raphesphaera turbata
|
USSR(Yaroslav) |
Middle Cambrian |
Late Cambrian |
Raphesphaera |
Raphesphaera turbata
|
USSR(Leningrad) |
Middle Cambrian |
Late Cambrian |
Raphesphaera |
Raphesphaera turbata
|
USSR(Estonian SSR) |
Middle Cambrian |
Late Cambrian |
Raphesphaera |
Raphesphaera turbata
|
Canada(Newfoundland) |
Middle Cambrian |
Late Cambrian |
Retisphaeridium |
Retisphaeridium sp
|
USSR(Kalinin) |
Middle Cambrian |
|
Saharidia |
Saharidia fragilis
|
USSR(Yaroslav) |
Late Cambrian |
Tremadocian |
Schizodiacrodium |
Schizodiacrodium armatum
sp. nov. |
USSR(Leningrad) |
Late Cambrian |
|
Schizodiacrodium |
Schizodiacrodium armatum
|
USSR(Leningrad) |
Late Cambrian |
Early Tremadocian |