Apiroschadon |
Apiroschadon
|
India(Assam) |
Early Eocene |
Middle Eocene |
Apiroschadon |
Apiroschadon emendata
|
India(Assam) |
Early Eocene |
Middle Eocene |
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium bifurcatum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium
|
Nd |
Nd |
|
Cymatiogalea |
Cymatiogalea
|
Nd |
Nd |
|
Goniosphaeridium |
Goniosphaeridium
|
Baltic |
Arenigian |
|
Multiplicisphaeridium |
Multiplicisphaeridium
|
Nd |
Nd |
|
Nothooidium |
Nothooidium
|
Morocco |
Late Arenigian |
Early Llanvirnian |
Nothooidium |
Nothooidium mordidum
|
Morocco |
Late Arenigian |
Early Llanvirnian |
Oligopogonium |
Oligopogonium
|
Canada(Alberta) |
Early Triassic |
|
Oligopogonium |
Oligopogonium barbatum
|
Canada(Alberta) |
Early Triassic |
|
Ooidium |
Ooidium barbatum
|
Canada(Alberta) |
Early Triassic |
|
Ooidium |
Ooidium mordidum
|
Morocco |
Late Arenigian |
Early Llanvirnian |
Ooidium |
Ooidium revinium
|
Belgium |
Late Cambrian |
|
Polygonium |
Polygonium
|
Nd |
Nd |
|
Protoleiosphaeridium |
Protoleiosphaeridium
|
Nd |
Nd |
|
Protoleiosphaeridium |
Protoleiosphaeridium conglutinatum
|
Nd |
Late Precambrian |
Devonian |