Convolutispora |
Convolutispora florida
|
Iowa |
Late Namurian |
Westphalian A |
Convolutispora |
Convolutispora fromensis
|
Iowa |
Late Namurian |
Westphalian A |
Convolutispora |
Convolutispora lepida
|
Iowa |
Late Namurian |
Westphalian A |
Convolutispora |
Convolutispora mellita
|
Iowa |
Late Namurian |
Westphalian A |
Convolutispora |
Convolutispora sp.1
sp. nov. |
Iowa |
Late Namurian |
Westphalian A |
Costatascyclus |
Costatascyclus crenatus
|
Iowa |
Namurian B |
Westphalian A |
Crassispora |
Crassispora kosankei
|
Iowa |
Namurian B |
Westphalian A |
Crassispora |
Crassispora plicata
|
Iowa |
Namurian B |
Westphalian A |
Cristatisporites |
Cristatisporites connexus
|
Iowa |
Namurian B |
Westphalian A |
Cristatisporites |
Cristatisporites indignabundus
|
Iowa |
Namurian B |
Westphalian A |
Cyclogranisporites |
Cyclogranisporites lasius
|
Iowa |
Late Namurian |
Westphalian A |
Cyclogranisporites |
Cyclogranisporites minutus
|
Iowa |
Late Namurian |
Westphalian A |
Deltoidospora |
Deltoidospora ornata
|
Iowa |
Late Namurian |
Westphalian A |
Densosporites |
Densosporites aculeatus
|
Iowa |
Namurian B |
Westphalian A |
Densosporites |
Densosporites annulatus
|
Iowa |
Namurian B |
Westphalian A |
Densosporites |
Densosporites irregularis
|
Iowa |
Namurian B |
Westphalian A |
Densosporites |
Densosporites oblatus
|
Iowa |
Namurian B |
Westphalian A |