Evittia |
Evittia sanpetrensis
|
Nd |
Nd |
|
Evittia |
Evittia sartbernardensis
|
Nd |
Arenigian |
|
Evittia |
Evittia semispinosa
|
Nd |
Early Ludlovian |
|
Evittia |
Evittia sommeri
|
Nd |
Early Devonian |
Middle Devonian |
Evittia |
Evittia spicifera
|
Nd |
Middle Devonian |
|
Evittia |
Evittia thyrae
|
Nd |
Ludlovian |
|
Evittia |
Evittia tolontola
|
Nd |
Late Ludlovian |
Middle Siegenian |
Evittia |
Evittia torrestionensis
|
Nd |
Ludlovian |
|
Evittia |
Evittia tribrachiata
|
England(Shropshire) |
Wenlockian |
Ludlovian |
Evittia |
Evittia trispinoramosa
|
Nd |
Frasnian |
|
Excultibrachium |
Excultibrachium
|
Nd |
Nd |
|
Excultibrachium |
Excultibrachium concinnum
|
Nd |
Caradocian |
|
Excultibrachium |
Excultibrachium oligocladatum
|
Nd |
Soudleyan |
Onnian |
Excultibrachium |
Excultibrachium ramiformatum
|
Nd |
Late Wenlockian |
|
Exilisphaeridium |
Exilisphaeridium
|
Nd |
Nd |
|
Exilisphaeridium |
Exilisphaeridium irregulare
|
Nd |
Nd |
|
Exilisphaeridium |
Exilisphaeridium simplex
|
Nd |
Early Mississippian |
|