Trachysphaeridium |
Trachysphaeridium sp
|
USSR(Siberia) |
Middle Precambrian |
|
Trachysphaeridium |
Trachysphaeridium sp
|
USSR(Siberia) |
Riphean |
|
Trachysphaeridium |
Trachysphaeridium uspenskyi
|
USSR(Vologda) |
Middle Ordovician |
|
Trachysphaeridium |
Trachysphaeridium vetternii
|
USSR(Siberia) |
Riphean |
|
Trachytrichoides |
Trachytrichoides ovalis
sp. nov. |
USSR(Krasnoyarsk Kray) |
Late Riphean |
|
Trapezochitina |
Trapezochitina angularis
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Karelian ASSR) |
Middle Precambrian |
|
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Ukrainian SSR) |
Middle Precambrian |
|
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Siberia) |
Riphean |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Karelian ASSR) |
Middle Precambrian |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Ukrainian SSR) |
Middle Precambrian |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Ukrainian SSR) |
Precambriam |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Siberia) |
Middle Precambrian |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Siberia) |
Riphean |
|
Trichosphaeridium |
Trichosphaeridium hirtum
|
USSR(Leningrad) |
Middle Cambrian |
|
Turuchanica |
Turuchanica alara
|
USSR(Karelian ASSR) |
Middle Precambrian |
|
Turuchanica |
Turuchanica alara
|
USSR(Siberia) |
Riphean |
|