Acritarch |
Acritarch sp.A
sp. nov. |
Iowa |
Late Frasnian |
|
Asperispora |
Asperispora
|
Iowa |
Late Frasnian |
|
Auroraspora |
Auroraspora sp
|
Iowa |
Late Frasnian |
|
Auroraspora |
Auroraspora sp
|
Iowa |
Late Frasnian |
|
Centrasphaeridium |
Centrasphaeridium
|
Iowa |
Late Frasnian |
|
Centrasphaeridium |
Centrasphaeridium armarium
sp. nov. |
Iowa |
Late Frasnian |
|
Centrasphaeridium |
Centrasphaeridium lecythium
sp. nov. |
Iowa |
Late Frasnian |
|
Chelinospora |
Chelinospora sp
|
Iowa |
Late Frasnian |
|
Chomotriletes |
Chomotriletes bistchoensis
|
Iowa |
Late Frasnian |
|
Cirratriradites |
Cirratriradites sp
|
Iowa |
Late Frasnian |
|
Comasphaeridium |
Comasphaeridium muscosum
sp. nov. |
Iowa |
Late Frasnian |
|
Convolutispora |
Convolutispora caperata
sp. nov. |
Iowa |
Late Frasnian |
|
Cristatisporites |
Cristatisporites
|
Iowa |
Late Frasnian |
|
Cristatisporites |
Cristatisporites cariosus
sp. nov. |
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera ambotrocha
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera chelina
|
Iowa |
Late Frasnian |
|
Cymatiosphaera |
Cymatiosphaera craticula
|
Iowa |
Late Frasnian |
|