Cymatiogalea |
Cymatiogalea margaritata
|
Africa |
Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera africana
|
Africa |
Tremadocian |
|
Priscotheca |
Priscotheca raia
|
Africa |
Tremadocian |
|
Nucellosphaeridium |
Nucellosphaeridium deunffii
|
Baltic |
Late Gothlandian |
|
Baltisphaeridium |
Baltisphaeridium longispinosum
|
Baltic |
Silurian |
|
Dictyotidium |
Dictyotidium dictyotum
|
Baltic |
Silurian |
|
Trichosphaeridium |
Trichosphaeridium annolovaense
|
Baltic |
Middle Cambrian |
|
Favososphaeridium |
Favososphaeridium scandicum
|
Baltic |
Middle Cambrian |
|
Trachydiacrodium |
Trachydiacrodium productum
|
Baltic |
Late Cambrian |
|
Leiosphaeridia |
Leiosphaeridia baltica
|
Baltic |
Ordovician |
|
Lunulidia |
Lunulidia lunula
|
Baltic |
Ordovician |
|
Bacisphaeridium |
Bacisphaeridium bacifer
|
Baltic |
Ordovician |
|
Pulvinosphaeridium |
Pulvinosphaeridium pulvinellum
|
Baltic |
Silurian |
|
Orygmatosphaeridium |
Orygmatosphaeridium ruminatum
|
Baltic |
Ordovician |
|
Estiastra |
Estiastra magna
|
Baltic |
Early Gothlandian |
|
Leiofusa |
Leiofusa fusiformis
|
Baltic |
Silurian |
|
Cymatiosphaera |
Cymatiosphaera radiata
|
Baltic |
Cretaceous |
|