Leiosphaeridia |
Leiosphaeridia parvigranulosa
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium breviciliatum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium crassiechinatum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium echinosum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium octospinosum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium ramispinosum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium sedecimspinosum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium spicatum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium spinoglobosum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium sprucegrovense
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium truncatum
|
Canada(Alberta) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium vigintispinum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium duodeciaster
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium breviciliatum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium crassiechinatum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium echinosum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium octospinum
|
Canada(Alberta) |
Late Devonian |
|