Sentusidinium |
Sentusidinium bellulum
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Tenua |
Tenua bellula
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Pyxidinopsis |
Pyxidinopsis microreticulata
|
China(Hopei) |
Oligocene |
|
Dictyotidium |
Dictyotidium microreticulatum
|
China(Hopei) |
Oligocene |
|
Dictyotidium |
Dictyotidium pachydermum
|
China(Hopei) |
Late Oligocene |
|
Pyxidinopsis |
Pyxidinopsis pachyderma
|
China(Hopei) |
Late Oligocene |
|
Pyxidinopsis |
Pyxidinopsis reticulata
|
China(Hopei) |
Late Eocene |
Oligocene |
Dictyotidium |
Dictyotidium reticulatum
|
China(Hopei) |
Late Eocene |
Oligocene |
Dictyotidium |
Dictyotidium spinoreticulatum
|
China(Hopei) |
Late Eocene |
Oligocene |
Pyxidinopsis |
Pyxidinopsis spinoreticulata
|
China(Hopei) |
Late Eocene |
Oligocene |
Peltiphoridium |
Peltiphoridium oblongatum
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Peltiphoridium |
Peltiphoridium liaoningense
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Bipolaribucina |
Bipolaribucina liaoningensis
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Bipolaribucina |
Bipolaribucina oblongata
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Pararhombodella |
Pararhombodella tubiforma
|
China(Hopei) |
Middle Oligocene |
Late Oligocene |
Pararhombodella |
Pararhombodella bifurcata
|
China(Hopei) |
Middle Oligocene |
Late Oligocene |
Pararhombodella |
Pararhombodella variabilis
|
China(Hopei) |
Middle Oligocene |
Late Oligocene |