Bion |
Bion megacystis
|
USSR(Baltic) |
Silurian |
|
Bion |
Bion microcystis
|
USSR(Baltic) |
Ludlovian |
|
Bion |
Bion solidum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium microspinosum
|
Nd |
Nd |
|
Leiosphaera |
Leiosphaera granulata
|
Poland |
Ordovician |
|
Leiosphaera |
Leiosphaera granulata
|
USSR(Baltic) |
Silurian |
|
Leiosphaera |
Leiosphaera megacystis
|
USSR(Baltic) |
Silurian |
|
Leiosphaera |
Leiosphaera microcystis
|
USSR(Baltic) |
Ludlovian |
|
Leiosphaera |
Leiosphaera perforata
|
USSR(Baltic) |
Silurian |
|
Leiosphaera |
Leiosphaera reticulata
|
USSR(Baltic) |
Silurian |
|
Leiosphaera |
Leiosphaera solida
|
Nd |
Nd |
|
Leiosphaera |
Leiosphaera sp. Mart.,1956
sp. nov. |
Nd |
Nd |
|
Leiosphaeridia |
Leiosphaeridia
|
USSR(Baltic) |
Ashgillian |
|
Leiosphaeridia |
Leiosphaeridia baltica
sp. nov. |
USSR(Baltic) |
Ashgillian |
|
Leiosphaeridia |
Leiosphaeridia granulata
|
USSR(Baltic) |
Silurian |
|
Leiosphaeridia |
Leiosphaeridia granulata
|
Poland |
Ordovician |
|
Leiosphaeridia |
Leiosphaeridia megacystis
|
USSR(Baltic) |
Silurian |
|