Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Poland |
Ordovician |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Czechoslovakia |
Ashgillian |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Czechoslovakia |
Arenigian |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Belgium |
Tarannon |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Belgium |
Wenlockian |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Nd |
Nd |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Nd |
Nd |
|
Peteinosphaeridium |
Peteinosphaeridium velatum
|
Sweden |
Ordovician |
|
Piliferosphaera |
Piliferosphaera setosa
|
Nd |
Nd |
|
Platycystidia |
Platycystidia diptera
|
Australia(W.Australia) |
Albian |
Cenomanian |
Polyancistrodorus |
Polyancistrodorus columbariferus
|
Oklahoma |
Middle Ordovician |
|
Polydeunffia |
Polydeunffia
|
Ohio |
Late Tarannon |
|
Polydeunffia |
Polydeunffia eisenackii
|
Indiana |
Middle Tarannon |
Late Tarannon |
Polydeunffia |
Polydeunffia eisenackii
sp. nov. |
Ohio |
Late Tarannon |
|
Polygonium |
Polygonium gracile
|
Nd |
Nd |
|