Baltisphaeridium |
Baltisphaeridium malum
|
USSR(Russian Platform) |
Late Ordovician |
|
Baltisphaeridium |
Baltisphaeridium malum
|
Spain |
Ludlovian |
|
Contextus |
Contextus sp
|
USSR(Russian Platform) |
Late Proterozoic |
|
Dasydiacrodium |
Dasydiacrodium palmatilobum
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium annulatum
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium bimarginatum
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium borracherosum
|
USSR(Russian Platform) |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium borracherosum
|
Spain |
Ludlovian |
|
Hystrichosphaeridium |
Hystrichosphaeridium brevispinosum
|
USSR(Russian Platform) |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium conspicuum
|
USSR(Russian Platform) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium hippocrepicum
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium hirsutoides
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium longispinosum
|
USSR(Russian Platform) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium malum
|
USSR(Russian Platform) |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium malum
|
Spain |
Ludlovian |
|
Hystrichosphaeridium |
Hystrichosphaeridium marginatum
sp. nov. |
USSR(Russian Platform) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium monstruosum
|
USSR(Russian Platform) |
Early Ordovician |
|