Ancyrospora |
Ancyrospora simplex
|
Iowa |
Givetian |
|
Brochotriletes |
Brochotriletes sp
|
Iowa |
Givetian |
|
Convolutispora |
Convolutispora sp
|
Iowa |
Givetian |
|
Geminospora |
Geminospora lemurata
|
Iowa |
Givetian |
|
Geminospora |
Geminospora membrana
sp. nov. |
Iowa |
Givetian |
|
Geminospora |
Geminospora nodosa
sp. nov. |
Iowa |
Givetian |
|
Geminospora |
Geminospora spinosa
|
Iowa |
Givetian |
|
Geminospora |
Geminospora tuberculata
|
Iowa |
Givetian |
|
Lycospora |
Lycospora sp
|
Iowa |
Givetian |
|
Perotrilites |
Perotrilites bifurcatus
|
Iowa |
Givetian |
|
Planisporites |
Planisporites plicatus
|
Iowa |
Givetian |
|
Punctatisporites |
Punctatisporites atavus
|
Iowa |
Givetian |
|
Retusotriletes |
Retusotriletes semizonalis
|
Iowa |
Givetian |
|
Rhabdosporites |
Rhabdosporites langii
|
Iowa |
Givetian |
|
Rhabdosporites |
Rhabdosporites parvulus
|
Iowa |
Givetian |
|
Rhabdosporites |
Rhabdosporites vermiculatus
sp. nov. |
Iowa |
Givetian |
|
Veryhachium |
Veryhachium
|
Iowa |
Givetian |
|