Hystrichosphaera |
Hystrichosphaera verrucosa
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Hystrichosphaeridium |
Hystrichosphaeridium bicyclospinosum
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Hystrichosphaeridiopsis |
Hystrichosphaeridiopsis erugata
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Paskentasphaera |
Paskentasphaera plurimispinosa
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Ellipsohystrichidium |
Ellipsohystrichidium parvispinum
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Chlamydophorella |
Chlamydophorella adnata
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Chytroeisphaeridia |
Chytroeisphaeridia sarjeanti
sp. nov. |
California |
Late Tithonian |
Hauterivian |
Sirmiodinium |
Sirmiodinium grossii
|
California |
Late Tithonian |
Hauterivian |
Pterospermopsis |
Pterospermopsis australiensis
|
California |
Late Tithonian |
Hauterivian |
Diplotesta |
Diplotesta krutzschii
|
California |
Late Tithonian |
Hauterivian |
Gonyaulax |
Gonyaulax vermiculata
sp. nov. |
California |
Late Tithonian |
|
Gonyaulax |
Gonyaulax helicoidea
|
California |
Late Tithonian |
Aptian |
Gonyaulax |
Gonyaulax diaphana
|
California |
Late Tithonian |
Aptian |
Hystrichosphaeridium |
Hystrichosphaeridium isocalamum
|
California |
Late Tithonian |
Aptian |
Hystrichosphaeridiopsis |
Hystrichosphaeridiopsis scabra
sp. nov. |
California |
Late Tithonian |
Aptian |
Micrhystridium |
Micrhystridium sp
|
California |
Late Tithonian |
Aptian |
Gonyaulax |
Gonyaulax granulosa
sp. nov. |
California |
Late Tithonian |
Valanginian |