Acanthisporites |
Acanthisporites
|
Nd |
Nd |
|
Acanthosporis |
Acanthosporis
|
Nd |
Nd |
|
Acanthosporis |
Acanthosporis horridus
|
W.Germany |
Middle Rhaetian |
|
Acinosporites |
Acinosporites
|
Nd |
Nd |
|
Acinosporites |
Acinosporites acanthomammillatus
|
Scotland |
Givetian |
|
Aenigmapollis |
Aenigmapollis
|
Nd |
Nd |
|
Aenigmapollis |
Aenigmapollis polyformis
|
South Dakota |
Paleocene |
|
Aequitriradites |
Aequitriradites
|
Nd |
Nd |
|
Aequitriradites |
Aequitriradites
|
Germany |
Berriasian |
Barremian |
Aggerispora |
Aggerispora
|
Nd |
Nd |
|
Aggerispora |
Aggerispora campta
|
W.Germany |
Nd |
|
Ahrensisporites |
Ahrensisporites
|
Indiana |
Early Pennsylvanian |
Middle Pennsylvanian |
Alangiopollis |
Alangiopollis
|
Nd |
Nd |
|
Alatipollenites |
Alatipollenites
|
Nd |
Nd |
|
Alatipollenites |
Alatipollenites lenticularis
|
E.Germany |
Jurassic |
Cretaceous |
Alexandriapollis |
Alexandriapollis
|
Nd |
Nd |
|
Alexandriapollis |
Alexandriapollis paraspinosus
|
W.Germany |
Late Oligocene |
|