Tanyosphaeridium |
Tanyosphaeridium variecalamum
|
England(Yorkshire) |
Barremian |
|
Trabeculidium |
Trabeculidium
|
England(Yorkshire) |
Middle Barremian |
|
Trabeculidium |
Trabeculidium elegantulum
|
California |
Danian |
|
Trabeculidium |
Trabeculidium pusulosum
|
England(Yorkshire) |
Middle Barremian |
|
Trabeculidium |
Trabeculidium pusulosum
|
W.Germany |
Early Oligocene |
|
Trabeculidium |
Trabeculidium quinquetrum
sp. nov. |
England(Yorkshire) |
Middle Barremian |
|
Trichodinium |
Trichodinium castanea
|
England(Yorkshire) |
Early Barremian |
Middle Barremian |
Trichodinium |
Trichodinium speetonense
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |
Wallodinium |
Wallodinium elongatum
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |
Wallodinium |
Wallodinium elongatum
|
Romania |
Bajocian |
Oxfordian |
Wallodinium |
Wallodinium krutzschii
|
England(Yorkshire) |
Barremian |
|
Wallodinium |
Wallodinium luna
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |