Pulvinosphaeridium |
Pulvinosphaeridium pulvinellum
|
Canada(Quebec) |
Middle Gothlandian |
|
Pulvinosphaeridium |
Pulvinosphaeridium pulvinellum
|
Sweden |
Early Llandoverian |
|
Solita |
Solita radians
|
Spain |
Ludlovian |
Early Gedinnian |
Solita |
Solita radians
|
Florida |
Silurian |
|
Solita |
Solita radians
|
Alabama |
Tarannon |
|
Solita |
Solita radiofurcata
|
New York |
Ludlovian |
Early Gedinnian |
Triangulina |
Triangulina alargada
|
Spain |
Ludlovian |
Early Gedinnian |
Tunisphaeridium |
Tunisphaeridium caudatum
|
New York |
Nd |
|
Tunisphaeridium |
Tunisphaeridium caudatum
|
Africa(Sahara) |
Late Llandoverian |
Early Budnanian |
Tunisphaeridium |
Tunisphaeridium concentricum
|
Ohio |
Nd |
|
Tunisphaeridium |
Tunisphaeridium concentricum
|
Indiana |
Nd |
|
Tunisphaeridium |
Tunisphaeridium concentricum
|
Georgia |
Tarannon |
|
Tunisphaeridium |
Tunisphaeridium concentricum
|
Kentucky |
Tarannon |
|
Tunisphaeridium |
Tunisphaeridium concentricum
|
Alabama |
Tarannon |
|
Tunisphaeridium |
Tunisphaeridium concentricum
|
Spain |
Ludlovian |
Early Gedinnian |
Tunisphaeridium |
Tunisphaeridium concentricum
|
New York |
Late Llandoverian |
|
Tunisphaeridium |
Tunisphaeridium concentricum
|
Canada(Ontario) |
Late Llandoverian |
|