Azolla |
Azolla ucrainica
|
Worldwide |
Toarcian |
Messinian |
Azolla |
Azolla velus
|
Worldwide |
Danian |
Thanetian |
Azolla |
Azolla ventricosa
|
Worldwide |
Rupelian |
Piacenzian |
Azollopsis |
Azollopsis coccoides
|
Worldwide |
Campanian |
Maastrichtian |
Azollopsis |
Azollopsis intermedia
|
Worldwide |
Santonian |
Campanian |
Azollopsis |
Azollopsis pilata
|
Worldwide |
Campanian |
Maastrichtian |
Azollopsis |
Azollopsis pusilla
|
Worldwide |
Early Campanian |
|
Azollopsis |
Azollopsis spinata
|
Worldwide |
Maastrichtian |
Danian |
Azollopsis |
Azollopsis tomentosa
|
Worldwide |
Maastrichtian |
Priabonian |
Bacutriletes |
Bacutriletes arnoldii
|
Worldwide |
Albian |
Early Campanian |
Bacutriletes |
Bacutriletes asaphus
|
Worldwide |
Smithian |
Anisian |
Bacutriletes |
Bacutriletes clavatus
|
Worldwide |
Pliensbachian |
Bajocian |
Bacutriletes |
Bacutriletes colinii
|
Worldwide |
Cenomanian |
|
Bacutriletes |
Bacutriletes corynactiformis
|
Worldwide |
Carnian |
|
Bacutriletes |
Bacutriletes corynactis
|
Worldwide |
Toarcian |
Bajocian |
Bacutriletes |
Bacutriletes costatispinosus
|
Worldwide |
Smithian |
Ladinian |
Bacutriletes |
Bacutriletes cutchensis
|
Worldwide |
Albian |
|