Striatotheca |
Striatotheca
|
Nd |
Nd |
|
Striatotheca |
Striatotheca loculifera
|
USSR(Russian Platform) |
Late Cambrian |
|
Striatotheca |
Striatotheca principalis
|
Nd |
Late Arenigian |
Llandeilian |
Striatotheca |
Striatotheca principalis
|
Nd |
Arenigian |
Middle Llandeilian |
Striatotheca |
Striatotheca prolixa
|
Nd |
Late Tremadocian |
Early Arenigian |
Striatotheca |
Striatotheca quieta
|
England |
Caradocian |
|
Striatotheca |
Striatotheca quieta
|
Nd |
Llanvirnian |
Llandeilian |
Striatotheca |
Striatotheca rarirrugulata
|
Nd |
Arenigian |
|
Striatotheca |
Striatotheca trigonia
|
Nd |
Arenigian |
|
Sylvanidium |
Sylvanidium paucibrachium
|
Gondwanaland |
Rawtheyan |
|
Tasmanites |
Tasmanites
|
Nd |
Nd |
|
Tasmanites |
Tasmanites bobrowskae
|
Poland |
Early Cambrian |
|
Tasmanites |
Tasmanites bobrowskae
|
USSR(Russian Platform) |
Early Cambrian |
|
Tasmanites |
Tasmanites tenellus
|
Poland |
Early Cambrian |
|
Tasmanites |
Tasmanites tenellus
|
USSR(Russian Platform) |
Early Cambrian |
|
Tectitheca |
Tectitheca decorata
|
Nd |
Late Tremadocian |
|
Tectitheca |
Tectitheca prima
|
Nd |
Early Tremadocian |
|