Sphenopsida |
Sphenopsida sp
|
Nd |
Nd |
|
Sphenopsids |
Sphenopsids sp
|
Nd |
Nd |
|
Sphenostrobus |
Sphenostrobus iowensis
|
USA(Mid-Continent) |
Pennsylvanian |
|
Spheripollenites |
Spheripollenites sp
|
Nd |
Jurassic |
|
Sporites |
Sporites sp
|
Nd |
Nd |
|
Stenochlacna |
Stenochlacna sp
|
Nd |
Nd |
|
Striatites |
Striatites sp
|
Nd |
Triassic |
|
Stromatopteris |
Stromatopteris sp
|
Nd |
Nd |
|
Sublagenicula |
Sublagenicula brasiliensis
|
Argentina(Chubut) |
Permian |
|
Sublagenicula |
Sublagenicula nuda
|
Argentina(Cordoba) |
Permian |
|
Syngramma |
Syngramma sp
|
Nd |
Nd |
|
Synorisporites |
Synorisporites tripapillatus
|
Northern Hemisphere |
Silurian |
|
Synorisporites |
Synorisporites verrucatus
|
Northern Hemisphere |
Silurian |
|
Szea |
Szea sinensis
|
China(Kiangsu) |
Early Permian |
|
Taeniaesporites |
Taeniaesporites sp
|
Nd |
Triassic |
|
Taenitis |
Taenitis sp
|
Nd |
Nd |
|
Tasmanitriletes |
Tasmanitriletes pedinacron
|
Denmark |
Late Keuper |
|