Pteroretis |
Pteroretis primum
|
Greenland |
Springerian |
|
Pteroretis |
Pteroretis primum
|
Kentucky |
Chesterian |
|
Pteroretis |
Pteroretis primum
|
Oklahoma |
Chesterian |
|
Pteroretis |
Pteroretis primum
|
Texas |
Springerian |
|
Punctatisporites |
Punctatisporites heterofiliferus
|
Oklahoma |
Springerian |
|
Punctatisporites |
Punctatisporites trifidus
|
Greenland |
Early Namurian |
|
Reticulatisporites |
Reticulatisporites peltatus
|
Oklahoma |
Springerian |
|
Reticulatisporites |
Reticulatisporites peltatus
|
Oklahoma |
Chesterian |
|
Reticulatisporites |
Reticulatisporites peltatus
|
Texas |
Springerian |
|
Rotaspora |
Rotaspora fracta
|
Oklahoma |
Chesterian |
|
Rotaspora |
Rotaspora fracta
|
Kentucky |
Chesterian |
|
Rotaspora |
Rotaspora fracta
|
Oklahoma |
Springerian |
|
Rotaspora |
Rotaspora knoxii
|
Greenland |
Early Namurian |
|
Rotaspora |
Rotaspora knoxii
|
Oklahoma |
Chesterian |
|
Rotaspora |
Rotaspora knoxii
|
Kentucky |
Chesterian |
|
Schulzospora |
Schulzospora rara
|
Greenland |
Early Namurian |
|
Schulzospora |
Schulzospora rara
|
Oklahoma |
Chesterian |
|