Sulcatosphaeridium |
Sulcatosphaeridium sp
|
USSR(Buryat ASSR) |
Silurian |
|
Symplassosphaeridium |
Symplassosphaeridium sp
|
USSR(Buryat ASSR) |
Cambrian |
Silurian |
Synsphaeridium |
Synsphaeridium sp
|
USSR(Buryat ASSR) |
Cambrian |
Silurian |
Tasmanites |
Tasmanites
|
USSR(Buryat ASSR) |
Ordovician |
|
Trachypsophosphaera |
Trachypsophosphaera asemanta
|
USSR(Buryat ASSR) |
Ordovician |
|
Trachysphaeridium |
Trachysphaeridium asperatum
|
USSR(Buryat ASSR) |
Cambrian |
Ordovician |
Trachysphaeridium |
Trachysphaeridium minutissimum
|
USSR(Buryat ASSR) |
Cambrian |
Silurian |
Trachysphaeridium |
Trachysphaeridium minutissimum
|
USSR(Buryat ASSR) |
Cambrian |
Silurian |
Trachysphaeridium |
Trachysphaeridium rugellosum
|
USSR(Buryat ASSR) |
Silurian |
|
Trachysphaeridium |
Trachysphaeridium sp
|
USSR(Buryat ASSR) |
Ordovician |
|
Trachysphaeridium |
Trachysphaeridium universalum
|
USSR(Buryat ASSR) |
Cambrian |
Silurian |
Trachytriletes |
Trachytriletes sp
|
USSR(Buryat ASSR) |
Ordovician |
Early Devonian |
Trachytriletes |
Trachytriletes sp
|
USSR(Buryat ASSR) |
Silurian |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Buryat ASSR) |
Cambrian |
Ordovician |
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Buryat ASSR) |
Cambrian |
Silurian |
Uniporata |
Uniporata faveolata
|
USSR(Buryat ASSR) |
Cambrian |
Ordovician |
Uniporata |
Uniporata simplex
|
USSR(Buryat ASSR) |
Cambrian |
Ordovician |