Bion |
Bion ramosum
|
Baltic |
Middle Ordovician |
Late Ordovician |
Goniosphaeridium |
Goniosphaeridium
|
Baltic |
Arenigian |
|
Goniosphaeridium |
Goniosphaeridium balticum
|
Nd |
Nd |
|
Goniosphaeridium |
Goniosphaeridium oligospinosum
|
Nd |
Nd |
|
Goniosphaeridium |
Goniosphaeridium polygonale
|
Baltic |
Arenigian |
|
Hystrichosphaeridium |
Hystrichosphaeridium balticum
|
Baltic |
Middle Ordovician |
Late Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium digitatum
|
Baltic |
Ashgillian |
Llandoverian |
Hystrichosphaeridium |
Hystrichosphaeridium polygonale
|
Baltic |
Middle Ordovician |
Late Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium trifurcatum
|
Baltic |
Middle Ordovician |
Late Ordovician |
Multiplicisphaeridium |
Multiplicisphaeridium cladum
|
Baltic |
Ordovician |
|
Multiplicisphaeridium |
Multiplicisphaeridium corallinum
|
Baltic |
Wenlockian |
|
Multiplicisphaeridium |
Multiplicisphaeridium digitatum
|
Baltic |
Ashgillian |
Llandoverian |
Multiplicisphaeridium |
Multiplicisphaeridium visbyense
|
Baltic |
Ordovician |
|
Ovum |
Ovum hispidum
|
Baltic |
Arenigian |
Llandoverian |
Ovum |
Ovum hispidum
|
Baltic |
Middle Ordovician |
Late Ordovician |
Ovum |
Ovum hispidum
|
Baltic |
Arenigian |
|
Ovum |
Ovum hispidum
|
Baltic |
Middle Ordovician |
Late Ordovician |