Estiastra |
Estiastra
|
USSR(Estonian SSR) |
Late Llandoverian |
|
Estiastra |
Estiastra magna
sp. nov. |
USSR(Estonian SSR) |
Late Llandoverian |
|
Hystrichosphaera |
Hystrichosphaera asteroidea
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium balticum
|
USSR(Estonian SSR) |
Arenigian |
|
Hystrichosphaeridium |
Hystrichosphaeridium balticum
|
USSR(Estonian SSR) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium brevispinosum
|
Sweden |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium brevispinosum
|
USSR(Estonian SSR) |
Arenigian |
|
Hystrichosphaeridium |
Hystrichosphaeridium brevispinosum
|
USSR(Baltic) |
Early Gothlandian |
|
Hystrichosphaeridium |
Hystrichosphaeridium digitatum
|
USSR(Estonian SSR) |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium digitatum
|
USSR(Baltic) |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium polygonale
|
USSR(Baltic) |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium polygonale
|
USSR(Estonian SSR) |
Early Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium polygonale
|
England |
Wenlockian |
|
Leiofusa |
Leiofusa oblonga
sp. nov. |
Sweden |
Early Ordovician |
|
Leiofusa |
Leiofusa ovalis
|
Sweden |
Early Ordovician |
|
Ovum |
Ovum hispidum
sp. nov. |
Nd |
Nd |
|