Aureotesta |
Aureotesta clathrata
|
Morocco |
Tremadocian |
Late Arenigian |
Baltisphaeridium |
Baltisphaeridium
|
England |
Permian |
|
Baltisphaeridium |
Baltisphaeridium denticulatum
|
Nd |
Early Gothlandian |
Late Gedinnian |
Baltisphaeridium |
Baltisphaeridium simplex
|
Uruguay |
Early Devonian |
|
Conradidium |
Conradidium firmamentum
|
Ohio |
Mississippian |
|
Coryphidium |
Coryphidium elegans
|
Nd |
Late Arenigian |
Llanvirnian |
Cymatiosphaera |
Cymatiosphaera velicarina
|
Ohio |
Mississippian |
|
Dactylofusa |
Dactylofusa maranhensis
|
Brazil |
Silurian |
|
Deunffia |
Deunffia
|
England |
Wenlockian |
|
Deunffia |
Deunffia eisenackii
|
Nd |
Ludlovian |
|
Deunffia |
Deunffia eoramusculosa
|
Nd |
Late Llandoverian |
Late Wenlockian |
Deunffia |
Deunffia furcata
|
Nd |
Late Llandoverian |
Late Wenlockian |
Deunffia |
Deunffia monospinosa
|
Nd |
Late Llandoverian |
Late Wenlockian |
Diexallophasis |
Diexallophasis absona
|
Ohio |
Mississippian |
|
Diexallophasis |
Diexallophasis cuspidis
|
Ohio |
Mississippian |
|
Domasia |
Domasia
|
North America |
Silurian |
|
Domasia |
Domasia
|
England |
Wenlockian |
|