Leiopsophosphaera |
Leiopsophosphaera minutissima
|
USSR(Yaroslav) |
Middle Ordovician |
|
Leiodiscina |
Leiodiscina parvibody
|
USSR(Yaroslav) |
Middle Ordovician |
|
Archaeodiscina |
Archaeodiscina parvibody
|
USSR(Yaroslav) |
Middle Ordovician |
|
Lophopsophosphaera |
Lophopsophosphaera parvula
|
USSR(Yaroslav) |
Middle Ordovician |
|
Lophosphaeridium |
Lophosphaeridium parvulum
|
USSR(Yaroslav) |
Middle Ordovician |
|
Trachypsophosphaera |
Trachypsophosphaera rugellosa
|
USSR(Yaroslav) |
Ordovician |
|
Trachysphaeridium |
Trachysphaeridium rugellosum
|
USSR(Yaroslav) |
Ordovician |
|
Trachypsophosphaera |
Trachypsophosphaera universala
|
USSR(Yaroslav) |
Middle Ordovician |
|
Trachysphaeridium |
Trachysphaeridium universalum
|
USSR(Yaroslav) |
Middle Ordovician |
|