Gonyaulacysta |
Gonyaulacysta serrata
|
USA(Atlantic Coast) |
Kimmeridgian |
Tithonian |
Leptodinium |
Leptodinium clathratum
|
USA(Atlantic Coast) |
Kimmeridgian |
Tithonian |
Prolixosphaeridium |
Prolixosphaeridium granulosum
|
USA(Atlantic Coast) |
Kimmeridgian |
Tithonian |
Systematophora |
Systematophora areolata
|
USA(Atlantic Coast) |
Kimmeridgian |
Tithonian |
Ctenidodinium |
Ctenidodinium panneum
|
USA(Atlantic Coast) |
Kimmeridgian |
Tithonian |
Hystrichosphaeridium |
Hystrichosphaeridium petilum
|
USA(Atlantic Coast) |
Kimmeridgian |
Tithonian |
Rogalskaisporites |
Rogalskaisporites cicatricosus
|
USA(Atlantic Coast) |
Berriasian |
|
Muderongia |
Muderongia crucis
|
USA(Atlantic Coast) |
Valanginian |
Hauterivian |
Muderongia |
Muderongia mcwhaei
|
USA(Atlantic Coast) |
Barremian |
|
Pseudoceratium |
Pseudoceratium gochtii
|
USA(Atlantic Coast) |
Barremian |
|
Pseudoceratium |
Pseudoceratium pelliferum
|
USA(Atlantic Coast) |
Barremian |
|
Pseudoceratium |
Pseudoceratium nudum
|
USA(Atlantic Coast) |
Barremian |
|
Muderongia |
Muderongia simplex
|
USA(Atlantic Coast) |
Barremian |
|
Cyclonephelium |
Cyclonephelium tabulatum
|
USA(Atlantic Coast) |
Aptian |
|
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
USA(Atlantic Coast) |
Aptian |
|
Achomosphaera |
Achomosphaera neptuni
|
USA(Atlantic Coast) |
Aptian |
|
Apteodinium |
Apteodinium granulatum
|
USA(Atlantic Coast) |
Aptian |
|