Hemicystodinium |
Hemicystodinium sp
|
Alaska |
Early Tertiary |
|
Herendeenia |
Herendeenia pisciformis
|
Alaska |
Neocomian |
|
Herendeenia |
Herendeenia pisciformis
|
Alaska |
Middle Albian |
Late Albian |
Hexagonifera |
Hexagonifera chlamydata
|
Alaska |
Cenomanian |
Campanian |
Hystrichodinium |
Hystrichodinium pulchrum
|
Alaska |
Albian |
Campanian |
Hystrichodinium |
Hystrichodinium sp
|
Alaska |
Santonian |
Campanian |
Hystrichodinium |
Hystrichodinium voigtii
|
Alaska |
Cenomanian |
|
Hystrichosphaeridium |
Hystrichosphaeridium cooksoniae
|
Alaska |
Neocomian |
Cenomanian |
Hystrichosphaeridium |
Hystrichosphaeridium difficile
|
Alaska |
Santonian |
Campanian |
Hystrichosphaeridium |
Hystrichosphaeridium recurvatum
|
Alaska |
Neocomian |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
Alaska |
Aptian |
Campanian |
Hystricosporites |
Hystricosporites
|
Alaska |
Permian |
Triassic |
Hystricosporites |
Hystricosporites sp
|
Alaska |
Permian |
Triassic |
Hystricosporites |
Hystricosporites sp
|
Alaska |
Mississippian |
Pennsylvanian |
Impletosphaeridium |
Impletosphaeridium sp
|
Alaska |
Neocomian |
|
Isabelidinium |
Isabelidinium belfastense
|
Alaska |
Cenomanian |
Campanian |
Isabelidinium |
Isabelidinium cooksoniae
|
Alaska |
Cenomanian |
|