Hystrichosphaeridium |
Hystrichosphaeridium balticum
|
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium balticum
|
USSR(Estonian SSR) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium brevifurcatum
|
Baltic |
Silurian |
Late Llandoverian |
Hystrichosphaeridium |
Hystrichosphaeridium brevifurcatum
sp. nov. |
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium erraticum
|
Baltic |
Silurian |
Late Ludlovian |
Hystrichosphaeridium |
Hystrichosphaeridium erraticum
sp. nov. |
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium gotlandicum
|
Baltic |
Silurian |
Late Llandoverian |
Hystrichosphaeridium |
Hystrichosphaeridium gotlandicum
sp. nov. |
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium intermedium
|
Baltic |
Silurian |
Late Llandoverian |
Hystrichosphaeridium |
Hystrichosphaeridium intermedium
sp. nov. |
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium microspinosum
|
Baltic |
Silurian |
Late Llandoverian |
Hystrichosphaeridium |
Hystrichosphaeridium microspinosum
sp. nov. |
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium oligofurcatum
|
Baltic |
Silurian |
Late Llandoverian |
Hystrichosphaeridium |
Hystrichosphaeridium oligofurcatum
sp. nov. |
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium oligospinosum
|
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium oligospinosum
|
USSR(Baltic) |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium piriferum
|
Baltic |
Silurian |
Late Llandoverian |