Gonyaulacysta |
Gonyaulacysta exilicristata
|
USA(Atlantic Coast) |
Cenomanian |
|
Gonyaulacysta |
Gonyaulacysta jurassica
|
USA(Atlantic Coast) |
Oxfordian |
|
Gonyaulacysta |
Gonyaulacysta longicornis
|
USA(Atlantic Coast) |
Tithonian |
Early Cretaceous |
Histiophora |
Histiophora ornata
|
USA(Atlantic Coast) |
Kimmeridgian |
|
Hystrichogonyaulax |
Hystrichogonyaulax nealei
|
USA(Atlantic Coast) |
Oxfordian |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
USA(Atlantic Coast) |
Cenomanian |
|
Imbatodinium |
Imbatodinium villosum
|
USA(Atlantic Coast) |
Tithonian |
Early Cretaceous |
Inaperturopollenites |
Inaperturopollenites
|
USA(Atlantic Coast) |
Middle Jurassic |
|
Isabelia |
Isabelia cretacea
|
USA(Atlantic Coast) |
Barremian |
|
Kenleyia |
Kenleyia lophophora
|
USA(Atlantic Coast) |
Paleocene |
|
Klukisporites |
Klukisporites pseudoreticulatus
|
USA(Atlantic Coast) |
Albian |
|
Leptodinium |
Leptodinium clathratum
|
USA(Atlantic Coast) |
Kimmeridgian |
|
Leptodinium |
Leptodinium eumorphum
|
USA(Atlantic Coast) |
Oxfordian |
|
Leptodinium |
Leptodinium sp
|
USA(Atlantic Coast) |
Coniacian |
|
Lithodinia |
Lithodinia jurassica
|
USA(Atlantic Coast) |
Oxfordian |
|
Litosphaeridium |
Litosphaeridium siphoniphorum
|
USA(Atlantic Coast) |
Cenomanian |
|
Meiourogonyaulax |
Meiourogonyaulax bulloidea
|
USA(Atlantic Coast) |
Oxfordian |
Middle Kimmeridgian |