Baltisphaeridium |
Baltisphaeridium
|
Nd |
Nd |
|
Barbatacysta |
Barbatacysta pelionensis
|
Nd |
Nd |
|
Barbatacysta |
Barbatacysta pilosa
|
Nd |
Nd |
|
Batiacasphaera |
Batiacasphaera
|
Nd |
Nd |
|
Batiacasphaera |
Batiacasphaera compta
|
England |
Middle Bartonian |
Priabonian |
Batiacasphaera |
Batiacasphaera curiosa
|
Nd |
Nd |
|
Batiacasphaera |
Batiacasphaera micropapillata
|
England |
Chattian |
Serravallian |
Batiacasphaera |
Batiacasphaera sphaerica
|
England |
Middle Aquitanian |
Serravallian |
Batioladinium |
Batioladinium
|
Nd |
Nd |
|
Batioladinium |
Batioladinium jaegeri
|
England |
Aptian |
|
Batioladinium |
Batioladinium longicornutum
|
England |
Late Valanginian |
Middle Barremian |
Batioladinium |
Batioladinium micropodum
|
England |
Middle Ryazanian |
Middle Barremian |
Batioladinium |
Batioladinium reticulatum
|
Australia(W.Australia) |
Berriasian |
|
Beaumontella |
Beaumontella
|
Nd |
Nd |
|
Beaumontella |
Beaumontella caminuspina
|
England |
Rhaetian |
|
Beaumontella |
Beaumontella caminuspina
|
France |
Rhaetian |
Early Sinemurian |
Belodinium |
Belodinium
|
Nd |
Nd |
|