Hystrichosphaeridium |
Hystrichosphaeridium piriferum
|
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium geometricum
|
Belgium |
Ypresian |
|
Baltisphaeridium |
Baltisphaeridium geometricum
|
Belgium |
Ypresian |
|
Baltisphaeridium |
Baltisphaeridium gilsonii
|
Belgium |
Holocene |
|
Micrhystridium |
Micrhystridium gilsonii
|
Belgium |
Holocene |
|
Baltisphaeridium |
Baltisphaeridium alloiteauii
|
Canada |
Middle Devonian |
|
Baltisphaeridium |
Baltisphaeridium sannemannii
|
Canada |
Middle Devonian |
|
Micrhystridium |
Micrhystridium alloiteauii
|
Canada |
Middle Devonian |
|
Micrhystridium |
Micrhystridium sannemannii
|
Canada |
Middle Devonian |
|
Leiosphaeridia |
Leiosphaeridia cryptogranulosa
|
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia diaphania
|
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia fastigatirugosa
sp. nov. |
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia major
|
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia microgranulifera
|
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia microsaetosa
|
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia orbiculata
|
Canada(Alberta) |
Late Devonian |
|
Leiosphaeridia |
Leiosphaeridia papillata
|
Canada(Alberta) |
Late Devonian |
|