Concentricystes |
Concentricystes gaoyouensis
|
China(Kiangsu) |
Paleocene |
Eocene |
Concentricystes |
Concentricystes hanjiangensis
|
China(Kiangsu) |
Paleocene |
Eocene |
Concentricystes |
Concentricystes membranaceus
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Concentricystes |
Concentricystes ningpoensis
|
China(E.China) |
Early Tertiary |
Quaternary |
Concentricystes |
Concentricystes panshanensis
|
China(Hopei) |
Oligocene |
|
Concentricystes |
Concentricystes rubinus
|
Nd |
Pleistocene |
|
Concentricystes |
Concentricystes spiralis
|
China(E.China) |
Quaternary |
|
Concentricystes |
Concentricystes tenellus
|
China(Hopei) |
Late Oligocene |
|
Concentricystes |
Concentricystes trigonus
|
China(E.China) |
Quaternary |
|
Concentricystes |
Concentricystes trimaculatus
|
China(E.China) |
Quaternary |
|
Concentricystes |
Concentricystes undulosus
|
China(E.China) |
Quaternary |
|
Concentricystes |
Concentricystes xishanensis
|
China(E.China) |
Quaternary |
|
Concentricystes |
Concentricystes zhanjiangensis
|
China(E.China) |
Quaternary |
|
Concentrites |
Concentrites
|
Nd |
Nd |
|
Concentrites |
Concentrites muricatus
|
Nd |
Middle Precambrian |
Late Precambrian |
Conicoidium |
Conicoidium
|
Nd |
Nd |
|
Conicoidium |
Conicoidium granorugosum
|
Nd |
Early Tertiary |
|