Hystrichosphaeridium |
Hystrichosphaeridium raritanianum
|
Nd |
Cenomanian |
|
Hystrichosphaeridium |
Hystrichosphaeridium readei
|
Nd |
Cenomanian |
|
Hystrichosphaeridium |
Hystrichosphaeridium recurvatum
|
Nd |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium recurvatum
sp. nov. |
Nd |
Late Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium recurvatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium redonense
|
Nd |
Recent |
|
Hystrichosphaeridium |
Hystrichosphaeridium reniforme
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium replexum
|
Nd |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium rhabdophorum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
Nd |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium scaffoldii
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium sheppeyense
|
Nd |
Early Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium simplex
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium simplicispinum
|
Nd |
Barremian |
|
Hystrichosphaeridium |
Hystrichosphaeridium siphoniphorum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium spinipansatum
|
Nd |
Early Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium spinosum
|
Nd |
Nd |
|