Pardaminela |
Pardaminela crassicosta
|
Worldwide |
Late Ludfordian |
Pridolian |
Peramorpha |
Peramorpha manuelsensis
|
Nd |
Nd |
|
Percultisphaera |
Percultisphaera stiphrospinata
|
Sweden(Gotland) |
Ludlovian |
|
Percultisphaera |
Percultisphaera stiphrospinata
|
Worldwide |
Homerian |
Early Ludfordian |
Perforela |
Perforela perforata
|
Worldwide |
Gorstian |
Pridolian |
Perforela |
Perforela perforata
|
Worldwide |
Gorstian |
Pridolian |
Petaloferidium |
Petaloferidium stigii
|
Gondwanaland |
Onnian |
Rawtheyan |
Peteinosphaeridium |
Peteinosphaeridium
|
Nd |
Nd |
|
Peteinosphaeridium |
Peteinosphaeridium breviradiatum
|
Nd |
Nd |
|
Peteinosphaeridium |
Peteinosphaeridium breviradiatum
|
Canada(Alberta) |
Late Tremadocian |
Early Arenigian |
Peteinosphaeridium |
Peteinosphaeridium nudum
|
Nd |
Nd |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
England |
Caradocian |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Nd |
Late Arenigian |
Llandeilian |
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Worldwide |
Caradocian |
Ashgillian |
Pheoclosterium |
Pheoclosterium fuscinulaegerum
|
England |
Caradocian |
|
Pheoclosterium |
Pheoclosterium fuscinulaegerum
|
Worldwide |
Late Onnian |
|
Pirea |
Pirea orbicularis
|
USSR(Russian Platform) |
Middle Cambrian |
Late Cambrian |