Hystrichosphaeridium |
Hystrichosphaeridium difficile
|
Nd |
Albian |
Cenomanian |
Hystrichosphaeridium |
Hystrichosphaeridium gliwicense
|
Nd |
Early Miocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium mantellii
|
Nd |
Cenomanian |
Turonian |
Hystrichosphaeridium |
Hystrichosphaeridium patulum
|
Nd |
Early Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium polyplasium
|
Nd |
Middle Miocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium radiculatum
|
Nd |
Late Albian |
Cenomanian |
Hystrichosphaeridium |
Hystrichosphaeridium readei
|
Nd |
Late Albian |
Cenomanian |
Hystrichosphaeridium |
Hystrichosphaeridium recurvatum
|
Nd |
Coniacian |
Maastrichtian |
Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
Nd |
Coniacian |
Early Eocene |
Hystrichosphaeridium |
Hystrichosphaeridium sheppeyense
|
Nd |
Early Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium simplicispinum
|
Nd |
Barremian |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
Nd |
Middle Oligocene |
Middle Miocene |
Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
Nd |
Late Albian |
Early Eocene |
Hystrichosphaeropsis |
Hystrichosphaeropsis borussica
|
Nd |
Early Eocene |
Late Eocene |
Hystrichosphaeropsis |
Hystrichosphaeropsis complanata
|
Nd |
Late Eocene |
Early Oligocene |
Hystrichosphaeropsis |
Hystrichosphaeropsis ovum
|
Nd |
Coniacian |
Campanian |
Hystrichosphaeropsis |
Hystrichosphaeropsis wetzelii
|
Nd |
Coniacian |
Campanian |