Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Buryat ASSR) |
Ordovician |
Silurian |
Trachysphaeridium |
Trachysphaeridium sp
|
USSR(Buryat ASSR) |
Ordovician |
Silurian |
Lophosphaeridium |
Lophosphaeridium sp
|
USSR(Buryat ASSR) |
Ordovician |
Silurian |
Uniporata |
Uniporata sp
|
USSR(Buryat ASSR) |
Ordovician |
Silurian |
Sulcatosphaeridium |
Sulcatosphaeridium sp
|
USSR(Buryat ASSR) |
Ordovician |
Silurian |
Leiopsophosphaera |
Leiopsophosphaera minutissima
|
USSR(Buryat ASSR) |
Silurian |
|
Leiopsophosphaera |
Leiopsophosphaera plicata
|
USSR(Buryat ASSR) |
Silurian |
|
Leiosphaeridia |
Leiosphaeridia flava
|
USSR(Buryat ASSR) |
Silurian |
|
Trachysphaeridium |
Trachysphaeridium plicatum
|
USSR(Buryat ASSR) |
Silurian |
|
Trachypsophosphaera |
Trachypsophosphaera asemanta
|
USSR(Buryat ASSR) |
Silurian |
|
Trachysphaeridium |
Trachysphaeridium sp
|
USSR(Buryat ASSR) |
Silurian |
|
Lophosphaeridium |
Lophosphaeridium parvum
|
USSR(Buryat ASSR) |
Silurian |
|
Lophopsophosphaera |
Lophopsophosphaera rarum
|
USSR(Buryat ASSR) |
Silurian |
|
Lophosphaeridium |
Lophosphaeridium sp
|
USSR(Buryat ASSR) |
Silurian |
|
Lophominuscula |
Lophominuscula prima
|
USSR(Buryat ASSR) |
Silurian |
|
Margominuscula |
Margominuscula minor
|
USSR(Buryat ASSR) |
Silurian |
|
Leiominuscula |
Leiominuscula minuta
|
USSR(Buryat ASSR) |
Silurian |
|