Centrasphaeridium |
Centrasphaeridium
|
Iowa |
Late Frasnian |
|
Centrasphaeridium |
Centrasphaeridium armarium
sp. nov. |
Iowa |
Late Frasnian |
|
Centrasphaeridium |
Centrasphaeridium lecythium
sp. nov. |
Iowa |
Late Frasnian |
|
Chomotriletes |
Chomotriletes bistchoensis
|
Iowa |
Late Frasnian |
|
Comasphaeridium |
Comasphaeridium muscosum
sp. nov. |
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera ambotrocha
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera chelina
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera parvicarina
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera perimembrana
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera platoloma
|
Iowa |
Late Frasnian |
|
Daillydium |
Daillydium pentaster
|
Iowa |
Late Frasnian |
|
Dictyotidium |
Dictyotidium craticulum
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera craticula
|
Iowa |
Late Frasnian |
|
Dictyotidium |
Dictyotidium sp
|
Iowa |
Late Frasnian |
|
Elektoriskos |
Elektoriskos dolos
|
Iowa |
Late Frasnian |
|
Gorgonisphaeridium |
Gorgonisphaeridium furcillatum
sp. nov. |
Iowa |
Late Frasnian |
|
Gorgonisphaeridium |
Gorgonisphaeridium telum
sp. nov. |
Iowa |
Late Frasnian |
|