Auroraspora |
Auroraspora
|
Iowa |
Frasnian |
|
Chomotriletes |
Chomotriletes bistchoensis
|
Iowa |
Frasnian |
|
Cirratriradites |
Cirratriradites sp
|
Iowa |
Frasnian |
|
Convolutispora |
Convolutispora
|
Iowa |
Frasnian |
|
Cymatiosphaera |
Cymatiosphaera ambotrocha
|
Iowa |
Frasnian |
|
Daillydium |
Daillydium pentaster
|
Iowa |
Frasnian |
|
Geminospora |
Geminospora lemurata
|
Iowa |
Frasnian |
|
Maranhites |
Maranhites sp
|
Iowa |
Frasnian |
|
Micrhystridium |
Micrhystridium sp
|
Iowa |
Frasnian |
|
Punctatisporites |
Punctatisporites
|
Iowa |
Frasnian |
|
Retusotriletes |
Retusotriletes
|
Iowa |
Frasnian |
|
Solisphaeridium |
Solisphaeridium sp
|
Iowa |
Frasnian |
|
Stellinium |
Stellinium comptum
|
Iowa |
Frasnian |
|
Stellinium |
Stellinium micropolygonale
|
Iowa |
Frasnian |
|
Unellium |
Unellium piriforme
|
Iowa |
Frasnian |
|
Unellium |
Unellium winslowiae
|
Iowa |
Frasnian |
|
Veryhachium |
Veryhachium cymosum
|
Iowa |
Frasnian |
|