Eupoikilofusa |
Eupoikilofusa spinata
|
Canada(Quebec) |
Middle Ordovician |
|
Poikilofusa |
Poikilofusa spinata
|
Canada(Quebec) |
Middle Ordovician |
|
Diexallophasis |
Diexallophasis granulatispinosa
|
England(Shropshire) |
Wenlockian |
|
Multiplicisphaeridium |
Multiplicisphaeridium granulatispinosum
|
England(Shropshire) |
Wenlockian |
|
Ammonidium |
Ammonidium cladum
|
England(Shropshire) |
Wenlockian |
|
Baltisphaeridium |
Baltisphaeridium cladum
|
England(Shropshire) |
Wenlockian |
|
Domasia |
Domasia elongata
|
Nd |
Nd |
|
Domasia |
Domasia symmetrica
|
Nd |
Nd |
|
Domasia |
Domasia algerensis
|
Ohio |
Middle Tarannon |
Late Tarannon |
Leiofusa |
Leiofusa algerensis
|
Ohio |
Middle Tarannon |
Late Tarannon |
Baltisphaeridium |
Baltisphaeridium encantador
|
Ohio |
Late Tarannon |
|
Ammonidium |
Ammonidium encantador
|
Ohio |
Late Tarannon |
|
Visbysphaera |
Visbysphaera nannina
|
Sweden |
Llandoverian |
|
Baltisphaeridium |
Baltisphaeridium nanninum
|
Sweden |
Llandoverian |
|
Ammonidium |
Ammonidium cladum
|
Wales(Carmarthenshire) |
Wenlockian |
|
Ammonidium |
Ammonidium microcladum
|
Wales(Carmarthenshire) |
Llandoverian |
Early Wenlockian |
Ammonidium |
Ammonidium encantador
|
Wales(Carmarthenshire) |
Fronian |
Wenlockian |