Leiosphaeridia |
Leiosphaeridia baltica
|
USSR(Yaroslav) |
Middle Carboniferous |
|
Leiosphaeridia |
Leiosphaeridia eisenackii
|
USSR(Baltic) |
Late Ordovician |
|
Leiosphaeridia |
Leiosphaeridia eisenackii
|
USSR(Yaroslav) |
Middle Carboniferous |
|
Leiosphaeridia |
Leiosphaeridia ochroleuca
|
USSR(Baltic) |
Middle Cambrian |
|
Leiosphaeridia |
Leiosphaeridia pellucida
|
USSR(Baltic) |
Middle Cambrian |
|
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Baltic) |
Middle Cambrian |
|
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Yaroslav) |
Early Carboniferous |
|
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Yaroslav) |
Middle Carboniferous |
|
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Yaroslav) |
Cambrian |
|
Leiosphaeridia |
Leiosphaeridia tenuissima
|
USSR(Baltic) |
Middle Cambrian |
Ordovician |
Leiosphaeridia |
Leiosphaeridia tenuissima
|
USSR(Yaroslav) |
Middle Carboniferous |
|
Leiotriletes |
Leiotriletes
|
USSR(Yaroslav) |
Early Frasnian |
|
Leiotriletes |
Leiotriletes atavus
|
USSR(Yaroslav) |
Early Carboniferous |
|
Lophosphaeridium |
Lophosphaeridium sp
|
USSR(Yaroslav) |
Devonian |
|
Lophosphaeridium |
Lophosphaeridium tentativum
|
USSR(Yaroslav) |
Early Carboniferous |
|
Lophosphaeridium |
Lophosphaeridium tentativum
|
USSR(Yaroslav) |
Cambrian |
|
Lophosphaeridium |
Lophosphaeridium tuberculiferum
|
USSR(Baltic) |
Cambrian |
Silurian |