Institisporites |
Institisporites crispus
|
Poland |
Early Keuper |
|
Insulapollenites |
Insulapollenites
|
Wyoming |
Paleocene |
|
Insulapollenites |
Insulapollenites rugulatus
|
Wyoming |
Paleocene |
|
Integricorpus |
Integricorpus
|
USSR(Siberia) |
Senonian |
|
Integricorpus |
Integricorpus
|
Nd |
Nd |
|
Integricorpus |
Integricorpus bellum
|
USSR(Siberia) |
Senonian |
|
Interpollis |
Interpollis
|
France(Paris Basin) |
Early Tertiary |
|
Interulobites |
Interulobites
|
Virginia |
Barremian |
|
Interulobites |
Interulobites
|
Maryland |
Early Cretaceous |
|
Irmosporites |
Irmosporites
|
Argentina(La Rioja) |
|
|
Irmosporites |
Irmosporites circumpolaris
|
Argentina |
|
|
Ischyosporites |
Ischyosporites
|
Nd |
Nd |
|
Ityosporis |
Ityosporis
|
Louisiana |
Early Cretaceous |
Middle Cretaceous |
Ityosporis |
Ityosporis reburrus
|
Louisiana |
Early Cretaceous |
Middle Cretaceous |
Jandufouria |
Jandufouria
|
Guianas |
Tertiary |
|
Jandufouria |
Jandufouria seamrogiformis
|
Guianas |
Tertiary |
|
Jansoniuspollenites |
Jansoniuspollenites
|
Argentina |
Late Gondwana |
|