Orthosphaeridium |
Orthosphaeridium vibrissiferum
|
Nd |
Middle Ordovician |
|
Orygmahapsis |
Orygmahapsis
|
Nd |
Nd |
|
Orygmahapsis |
Orygmahapsis fistulosa
|
Nd |
Silurian |
|
Orygmahapsis |
Orygmahapsis magnata
|
Nd |
Late Givetian |
|
Orygmatosphaeridium |
Orygmatosphaeridium
|
Nd |
Nd |
|
Orygmatosphaeridium |
Orygmatosphaeridium distributum
|
Nd |
Late Riphean |
Vendian |
Orygmatosphaeridium |
Orygmatosphaeridium foveolatum
|
Nd |
Early Cambrian |
|
Orygmatosphaeridium |
Orygmatosphaeridium holtedahlii
|
USSR(Tyumenskaya Oblast) |
Eocambrian |
|
Orygmatosphaeridium |
Orygmatosphaeridium inconspicuum
|
Nd |
Early Cambrian |
|
Orygmatosphaeridium |
Orygmatosphaeridium kerianum
|
Nd |
Late Proterozoic |
|
Orygmatosphaeridium |
Orygmatosphaeridium liulaobeiense
|
Nd |
Sinian |
|
Orygmatosphaeridium |
Orygmatosphaeridium liulaobeiense
|
Nd |
Nd |
|
Orygmatosphaeridium |
Orygmatosphaeridium minor
|
Nd |
Nd |
|
Orygmatosphaeridium |
Orygmatosphaeridium minus
|
Nd |
Sinian |
|
Orygmatosphaeridium |
Orygmatosphaeridium minutum
|
Nd |
Wenlockian |
|
Orygmatosphaeridium |
Orygmatosphaeridium plicatum
|
Nd |
Late Precambrian |
|
Orygmatosphaeridium |
Orygmatosphaeridium rubiginosum
|
Nd |
Middle Precambrian |
|