Orthosphaeridium |
Orthosphaeridium rectangulare
|
Worldwide |
Caradocian |
Ashgillian |
Orthosphaeridium |
Orthosphaeridium ternatum
|
Worldwide |
Caradocian |
|
Pardaminela |
Pardaminela crassicosta
|
Worldwide |
Late Ludfordian |
Pridolian |
Percultisphaera |
Percultisphaera stiphrospinata
|
Worldwide |
Homerian |
Early Ludfordian |
Perforela |
Perforela perforata
|
Worldwide |
Gorstian |
Pridolian |
Perforela |
Perforela perforata
|
Worldwide |
Gorstian |
Pridolian |
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Worldwide |
Caradocian |
Ashgillian |
Pheoclosterium |
Pheoclosterium fuscinulaegerum
|
Worldwide |
Late Onnian |
|
Psenotopus |
Psenotopus chondrocheus
|
Worldwide |
Late Aeronian |
Homerian |
Pulvinosphaeridium |
Pulvinosphaeridium pulvinellum
|
Worldwide |
Telychian |
Homerian |
Rhacobrachion |
Rhacobrachion mala
|
Worldwide |
Ludlovian |
Pridolian |
Salopidium |
Salopidium granuliferum
|
Worldwide |
Late Aeronian |
Early Gorstian |
Triangulina |
Triangulina alargada
|
Worldwide |
Late Ludfordian |
Pridolian |
Tunisphaeridium |
Tunisphaeridium parvum
|
Worldwide |
Aeronian |
Early Gorstian |
Tylotopalla |
Tylotopalla caelamenicutis
|
Worldwide |
Telychian |
Sheinwoodian |
Tylotopalla |
Tylotopalla maraca
|
Worldwide |
Gorstian |
Early Ludfordian |
Tylotopalla |
Tylotopalla pyramidalis
|
Worldwide |
Early Gorstian |
|