Cleistosphaeridium |
Cleistosphaeridium spinulastrum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium spiralisetum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium spissum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium tenue
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium tenuifilum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium tianshanense
|
Nd |
Early Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium tiara
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium tiara
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium tiara
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium tribuliferum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium uncinispinosum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium varispinosum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium williamsii
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium xinjiangense
|
Nd |
Paleocene |
|
Cobricosphaeridium |
Cobricosphaeridium
|
Nd |
Nd |
|
Cobricosphaeridium |
Cobricosphaeridium giganteum
|
Nd |
Nd |
|
Cobricosphaeridium |
Cobricosphaeridium hebes
|
Nd |
Nd |
|