Spanomera |
Spanomera mauldinensis
|
USA |
Cretaceous |
|
Spencerites |
Spencerites moorei
|
USA |
Carboniferous |
|
Sphenophyllostachys |
Sphenophyllostachys bifurcatus
|
USA |
Carboniferous |
|
Sphenophyllostachys |
Sphenophyllostachys moorei
|
USA |
Carboniferous |
|
Sphenophyllostachys |
Sphenophyllostachys trisporangiostrobus
|
USA |
Carboniferous |
|
Sphenopteris |
Sphenopteris mixta
|
USA |
Carboniferous |
|
Sphenopteris |
Sphenopteris pendulata
|
USA |
Carboniferous |
|
Hymenophyllum |
Hymenophyllum pendulata
|
USA |
Carboniferous |
|
Sphenopteris |
Sphenopteris scabberima
|
USA |
Carboniferous |
|
Sphenostrobus |
Sphenostrobus iowensis
|
USA |
Carboniferous |
|
Sphenostrobus |
Sphenostrobus thompsonii
|
USA |
Carboniferous |
|
Sporangiostrobus |
Sporangiostrobus kansanensis
|
USA |
Carboniferous |
|
Sporangiostrobus |
Sporangiostrobus langfordi
|
USA |
Carboniferous |
|
Sporangiostrobus |
Sporangiostrobus ohioensis
|
USA |
Carboniferous |
|
Sporocarpon |
Sporocarpon furcatum
|
USA |
Devonian |
|
Staphylopteris |
Staphylopteris sagittata
|
USA |
Carboniferous |
|
Stewartiotheca |
Stewartiotheca warrenae
|
USA |
Carboniferous |
|