Striatotheca |
Striatotheca trigonia
|
Nd |
Late Llanvirnian |
|
Striatotheca |
Striatotheca virgata
|
E.Germany |
Late Llanvirnian |
|
Strophomorpha |
Strophomorpha
|
Nd |
Nd |
|
Strophomorpha |
Strophomorpha ovata
|
Nd |
Early Gothlandian |
|
Stylodiniopsis |
Stylodiniopsis
|
Nd |
Nd |
|
Stylodiniopsis |
Stylodiniopsis maculatus
|
Nd |
Early Oligocene |
|
Sulcatosphaeridium |
Sulcatosphaeridium
|
Nd |
Early Oligocene |
|
Sulcatosphaeridium |
Sulcatosphaeridium glabrum
|
Nd |
Early Cambrian |
|
Sulcatosphaeridium |
Sulcatosphaeridium incomptum
|
Nd |
Ordovician |
|
Sulcatosphaeridium |
Sulcatosphaeridium incrustatum
|
Nd |
Middle Cambrian |
|
Sulcatosphaeridium |
Sulcatosphaeridium marginatum
|
Nd |
Ordovician |
|
Sulcatosphaeridium |
Sulcatosphaeridium minutum
|
Nd |
Early Cambrian |
|
Sulcatosphaeridium |
Sulcatosphaeridium ovale
|
Nd |
Ordovician |
|
Sulcatosphaeridium |
Sulcatosphaeridium tenuirugosum
|
Nd |
Ordovician |
|
Sulcusicystis |
Sulcusicystis
|
Nd |
Nd |
|
Sulcusicystis |
Sulcusicystis baculatus
|
Nd |
Middle Jurassic |
|
Sulcusicystis |
Sulcusicystis clavatus
|
Nd |
Triassic |
Cretaceous |