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 |
|
Dictyotidium |
Dictyotidium sp
|
Iowa |
Late Frasnian |
|
Elektoriskos |
Elektoriskos dolos
|
Iowa |
Late Frasnian |
|
Geminospora |
Geminospora lemurata
|
Iowa |
Late Frasnian |
|
Gorgonisphaeridium |
Gorgonisphaeridium furcillatum
sp. nov. |
Iowa |
Late Frasnian |
|
Gorgonisphaeridium |
Gorgonisphaeridium sp
|
Iowa |
Late Frasnian |
|
Gorgonisphaeridium |
Gorgonisphaeridium telum
sp. nov. |
Iowa |
Late Frasnian |
|
Laiphospora |
Laiphospora membrana
|
Iowa |
Late Frasnian |
|
Leiosphaeridia |
Leiosphaeridia sp
|
Iowa |
Late Frasnian |
|
Leiotriletes |
Leiotriletes sp
|
Iowa |
Late Frasnian |
|
Lophosphaeridium |
Lophosphaeridium segregum
|
Iowa |
Late Frasnian |
|
Lophosphaeridium |
Lophosphaeridium sp
|
Iowa |
Late Frasnian |
|
Maranhites |
Maranhites perplexus
sp. nov. |
Iowa |
Late Frasnian |
|