Heterosphaeridium |
Heterosphaeridium sp
|
USSR(Ryazin) |
Ryazanian |
|
Horologinella |
Horologinella sp
|
USSR(Ryazin) |
Ryazanian |
|
Hystrichodinium |
Hystrichodinium pulchrum
|
USSR(Ryazin) |
Ryazanian |
Hauterivian |
Hystrichodinium |
Hystrichodinium voigtii
|
USSR(Ryazin) |
Ryazanian |
Hauterivian |
Hystrichostrogylon |
Hystrichostrogylon membraniphorum
|
USSR(Ryazin) |
Hauterivian |
|
Hystrichostrogylon |
Hystrichostrogylon stolidotum
|
USSR(Ryazin) |
Hauterivian |
|
Impagidinium |
Impagidinium ordocaviopse
sp. nov. |
USSR(Ryazin) |
Hauterivian |
|
Isthmocystis |
Isthmocystis distincta
|
USSR(Ryazin) |
Ryazanian |
Hauterivian |
Kalyptea |
Kalyptea diceras
|
USSR(Ryazin) |
Ryazanian |
|
Kiokansium |
Kiokansium brevispinosum
|
USSR(Ryazin) |
Hauterivian |
|
Kiokansium |
Kiokansium prolatum
|
USSR(Ryazin) |
Late Barremian |
Early Aptian |
Kleithriasphaeridium |
Kleithriasphaeridium corrugatum
|
USSR(Ryazin) |
Ryazanian |
|
Kleithriasphaeridium |
Kleithriasphaeridium eoinodes
|
USSR(Ryazin) |
Ryazanian |
|
Kleithriasphaeridium |
Kleithriasphaeridium fasciatum
|
USSR(Ryazin) |
Ryazanian |
|
Kleithriasphaeridium |
Kleithriasphaeridium porosispinum
|
USSR(Ryazin) |
Ryazanian |
|
Kleithriasphaeridium |
Kleithriasphaeridium sp
|
USSR(Ryazin) |
Ryazanian |
|
Lancettopsis |
Lancettopsis lanceolata
|
USSR(Ryazin) |
Ryazanian |
Early Aptian |