Trematosphaeridium |
Trematosphaeridium bifurcatum
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium biloculare
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium crepidale
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium decoratum
|
Nd |
Late Cambrian |
|
Trematosphaeridium |
Trematosphaeridium formosum
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Tyumenskaya Oblast) |
Eocambrian |
|
Trematosphaeridium |
Trematosphaeridium inspissatum
|
Nd |
Early Vendian |
|
Trematosphaeridium |
Trematosphaeridium maximum
|
Nd |
Nd |
|
Trematosphaeridium |
Trematosphaeridium medianum
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium minor
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium mugodjaricum
|
Nd |
Middle Riphean |
Late Riphean |
Trematosphaeridium |
Trematosphaeridium simplex
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium singularum
|
Nd |
Late Wenlockian |
|
Trematosphaeridium |
Trematosphaeridium sinuatum
|
Nd |
Vendian |
|
Trematosphaeridium |
Trematosphaeridium tener
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium triviale
|
Nd |
Middle Riphean |
|
Trematosphaeridium |
Trematosphaeridium zairiense
|
Nd |
Late Precambrian |
|