Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium mickwitzii
|
USSR(Russian Platform) |
Early Ordovician |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium simplex
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium bifurcatum
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium brevispinosum
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium gdowium
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium longispinosum
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium pateum
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium pmimigenum
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium rjabininii
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium sp
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium stellaeforme
|
USSR(Russian Platform) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium trifurcatum
|
USSR(Russian Platform) |
Early Ordovician |
|
Conochitina |
Conochitina armillata
|
USSR(Russian Platform) |
Early Ordovician |
|
Conochitina |
Conochitina brevis
|
USSR(Russian Platform) |
Early Ordovician |
|
Conochitina |
Conochitina concava
|
USSR(Russian Platform) |
Early Ordovician |
|
Conochitina |
Conochitina gordonensis
|
USSR(Russian Platform) |
Early Ordovician |
|
Conochitina |
Conochitina lepida
|
USSR(Russian Platform) |
Early Ordovician |
|