Surculosphaeridium |
Surculosphaeridium cribrotubiferum
|
England |
Cenomanian |
|
Surculosphaeridium |
Surculosphaeridium cribrotubiferum
|
France |
Cenomanian |
|
Systematophora |
Systematophora
|
Worldwide |
Oxfordian |
Miocene |
Systematophora |
Systematophora areolata
|
W.Germany |
Malm |
|
Systematophora |
Systematophora complicata
|
England |
Late Hauterivian |
Middle Barremian |
Systematophora |
Systematophora valensii
|
England |
Late Jurassic |
|
Taeniophora |
Taeniophora
|
Worldwide |
Oxfordian |
Paleocene |
Taeniophora |
Taeniophora iunctispina
|
W.Germany |
Malm |
|
Tanyosphaeridiaceae |
Tanyosphaeridiaceae
|
Nd |
Nd |
|
Tanyosphaeridium |
Tanyosphaeridium
|
Worldwide |
Barremian |
Miocene |
Tanyosphaeridium |
Tanyosphaeridium isocalamum
|
Australia |
Early Cretaceous |
|
Tanyosphaeridium |
Tanyosphaeridium tenerum
|
W.Germany |
Middle Oligocene |
|
Tanyosphaeridium |
Tanyosphaeridium variecalamum
|
England |
Cenomanian |
|
Toolongia |
Toolongia
|
Worldwide |
Senonian |
|
Toolongia |
Toolongia medusoides
|
Australia |
Senonian |
|
Tubidermodinium |
Tubidermodinium
|
Worldwide |
Early Eocene |
|
Tubidermodinium |
Tubidermodinium sulcatum
|
USSR |
Early Oligocene |
|