Grandispora |
Grandispora echinata
|
Kentucky |
Chesterian |
|
Grandispora |
Grandispora echinata
|
Oklahoma |
Springerian |
|
Grandispora |
Grandispora echinata
|
Arkansas |
Springerian |
|
Grandispora |
Grandispora spinosa
|
Oklahoma |
Springerian |
|
Grandispora |
Grandispora spinosa
|
Arkansas |
Springerian |
|
Hadrohercus |
Hadrohercus stereon
|
Oklahoma |
Springerian |
|
Hadrohercus |
Hadrohercus stereon
|
Arkansas |
Springerian |
|
Hymenospora |
Hymenospora caperata
|
Oklahoma |
Springerian |
|
Hymenospora |
Hymenospora caperata
|
Arkansas |
Springerian |
|
Hymenospora |
Hymenospora sp
|
Illinois |
Chesterian |
|
Laevigatosporites |
Laevigatosporites desmoinesensis
|
Kentucky |
Morrowan |
|
Laevigatosporites |
Laevigatosporites desmoinesensis
|
Ohio |
Pottsville |
|
Laevigatosporites |
Laevigatosporites desmoinesensis
|
Illinois |
Morrowan |
|
Laevigatosporites |
Laevigatosporites latus
|
Kentucky |
Morrowan |
|
Laevigatosporites |
Laevigatosporites latus
|
Ohio |
Pottsville |
|
Laevigatosporites |
Laevigatosporites ovalis
|
Kentucky |
Morrowan |
|
Laevigatosporites |
Laevigatosporites ovalis
|
Ohio |
Pottsville |
|