Micrhystridium |
Micrhystridium inconspicuum
|
USSR(Estonian SSR) |
Llandeilian |
Early Caradocian |
Micrhystridium |
Micrhystridium nannacanthum
|
Finland |
Arenigian |
Pridolian |
Micrhystridium |
Micrhystridium nannacanthum
|
USSR(Estonian SSR) |
Late Arenigian |
Early Llandoverian |
Micrhystridium |
Micrhystridium raspum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium robustum
|
Finland |
Tremadocian |
Early Llandoverian |
Micrhystridium |
Micrhystridium stellatum
|
Finland |
Late Arenigian |
Pridolian |
Micrhystridium |
Micrhystridium stellatum
|
USSR(Estonian SSR) |
Late Arenigian |
Early Llandoverian |
Multiplicisphaeridium |
Multiplicisphaeridium alloiteauii
|
USSR(Estonian SSR) |
Arenigian |
Ashgillian |
Multiplicisphaeridium |
Multiplicisphaeridium alloiteauii
|
USSR(Estonian SSR) |
Late Arenigian |
Ashgillian |
Multiplicisphaeridium |
Multiplicisphaeridium bifurcatum
|
Finland |
Late Arenigian |
Early Llandoverian |
Multiplicisphaeridium |
Multiplicisphaeridium bifurcatum
|
USSR(Estonian SSR) |
Late Arenigian |
Early Llandoverian |
Multiplicisphaeridium |
Multiplicisphaeridium irregulare
|
Finland |
Late Arenigian |
Pridolian |
Multiplicisphaeridium |
Multiplicisphaeridium radicosum
|
Finland |
Caradocian |
Ashgillian |
Multiplicisphaeridium |
Multiplicisphaeridium radicosum
|
USSR(Estonian SSR) |
Late Caradocian |
Early Ashgillian |
Multiplicisphaeridium |
Multiplicisphaeridium ramusculosum
|
Finland |
Llandoverian |
|
Multiplicisphaeridium |
Multiplicisphaeridium raspum
|
Finland |
Late Arenigian |
Ashgillian |
Multiplicisphaeridium |
Multiplicisphaeridium raspum
|
USSR(Estonian SSR) |
Late Arenigian |
Ashgillian |