Tuberculatisporites |
Tuberculatisporites mamillarius
|
Nd |
Nd |
|
Tuberculatisporites |
Tuberculatisporites tuberosus
|
Germany |
Late Carboniferous |
|
Tuberculatosporites |
Tuberculatosporites
|
Nd |
Nd |
|
Tuberculatosporites |
Tuberculatosporites anicystoides
|
China |
Early Permian |
|
Tymphanophora |
Tymphanophora simplex
|
England |
Jurassic |
|
Ullmannia |
Ullmannia bronnii
|
Germany |
Permian |
|
Ullmannia |
Ullmannia frumentaria
|
Germany |
Permian |
|
Umkomasia |
Umkomasia
|
Nd |
Nd |
|
Urnatopteris |
Urnatopteris tenella
|
England |
Carboniferous |
|
Uskiella |
Uskiella spargans
|
Wales |
Devonian |
|
Uvaesporites |
Uvaesporites
|
Nd |
Nd |
|
Uvaesporites |
Uvaesporites glomeratus
|
Germany |
Early Cretaceous |
|
Uvaesporites |
Uvaesporites verrucosus
|
Nd |
Nd |
|
Vallatisporites |
Vallatisporites
|
Nd |
Nd |
|
Vallatisporites |
Vallatisporites vallatus
|
Canada |
Late Carboniferous |
|
Valvisisporites |
Valvisisporites
|
Nd |
Nd |
|
Valvisisporites |
Valvisisporites auritus
|
Nd |
Nd |
|