Baltisphaeridium |
Baltisphaeridium
|
USA(Atlantic Coast.Pl.) |
Middle Cretaceous |
|
Cleistosphaeridium |
Cleistosphaeridium ancoriferum
|
USA(Atlantic Coast.Pl.) |
Middle Cretaceous |
|
Fromea |
Fromea amphora
|
USA(Atlantic Coast.Pl.) |
Middle Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium arundum
|
USA(Atlantic Coast.Pl.) |
Middle Cretaceous |
|
Micrhystridium |
Micrhystridium
|
USA(Atlantic Coast.Pl.) |
Middle Cretaceous |
|
Palaeohystrichophora |
Palaeohystrichophora infusorioides
|
USA(Atlantic Coast.Pl.) |
Cenomanian |
|
Palaeostomocystis |
Palaeostomocystis fragilis
|
USA(Atlantic Coast.Pl.) |
Middle Cretaceous |
|
Wallodinium |
Wallodinium inflatum
|
USA(Atlantic Coast.Pl.) |
Albian |
|