Micrhystridium |
Micrhystridium deflandrei
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium densispinum
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium diploporum
|
USSR(Estonian SSR) |
Ordovician |
|
Micrhystridium |
Micrhystridium duodeciaster
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium eatonense
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium echinoides
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium echinoides
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium echinosum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium filigerum
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium fragile
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium fragile
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium gilsonii
|
Belgium |
Holocene |
|
Micrhystridium |
Micrhystridium heteracanthum
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium imitatum
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium incertum
|
Nd |
Paleozoic |
|
Micrhystridium |
Micrhystridium inconspicuum
|
Nd |
Jurassic |
Cretaceous |
Micrhystridium |
Micrhystridium inconspicuum
|
Nd |
Paleozoic |
|