Pleuromeia |
Pleuromeia
|
Nd |
Nd |
|
Nathorstia |
Nathorstia
|
Nd |
Nd |
|
Isoetes |
Isoetes
|
Nd |
Nd |
|
Sphenophyllales |
Sphenophyllales
|
Nd |
Nd |
|
Calamospora |
Calamospora
|
Nd |
Nd |
|
Archaeopteris |
Archaeopteris
|
Nd |
Nd |
|
Stauropteris |
Stauropteris
|
Nd |
Nd |
|
Laevigatosporites |
Laevigatosporites
|
Nd |
Nd |
|
Macrostachya |
Macrostachya caudata
|
Nd |
Nd |
|
Palaeostachya |
Palaeostachya elongata
|
Nd |
Nd |
|
Paracalamostachys |
Paracalamostachys striata
|
Nd |
Nd |
|
Macrostachya |
Macrostachya infundibuliformis
|
Nd |
Nd |
|
Calamostachys |
Calamostachys casheana
|
Nd |
Nd |
|
Calamostachys |
Calamostachys americana
|
Nd |
Nd |
|
Calamostachys |
Calamostachys solmsii
|
Nd |
Nd |
|
Calamostachys |
Calamostachys tuberculata
|
Nd |
Nd |
|
Noeggerathia |
Noeggerathia foliosa
|
Nd |
Nd |
|