Micrhystridium |
Micrhystridium fragile
|
Canada(W.Canada) |
Late Bajocian |
|
Micrhystridium |
Micrhystridium fragile
|
France(Calvados) |
Bajocian |
|
Micrhystridium |
Micrhystridium inconspicuum
|
Canada(W.Canada) |
Late Bajocian |
|
Micrhystridium |
Micrhystridium inconspicuum
|
Canada(W.Canada) |
Late Bajocian |
Callovian |
Micrhystridium |
Micrhystridium inconspicuum
|
France(Poitou) |
Bathonian |
|
Micrhystridium |
Micrhystridium inconspicuum
|
Canada(W.Canada) |
Late Bajocian |
|
Micrhystridium |
Micrhystridium inconspicuum
|
France(Poitou) |
Bajocian |
|
Micrhystridium |
Micrhystridium ovale
sp. nov. |
Canada(W.Canada) |
Callovian |
|
Micrhystridium |
Micrhystridium piveteaui
|
Canada(W.Canada) |
Early Jurassic |
|
Micrhystridium |
Micrhystridium polyedricum
|
Canada(W.Canada) |
Early Jurassic |
|
Micrhystridium |
Micrhystridium recurvatum
|
Canada(W.Canada) |
Late Bajocian |
Callovian |
Micrhystridium |
Micrhystridium recurvatum
|
France(Poitou) |
Bajocian |
|
Micrhystridium |
Micrhystridium stellatum
|
Canada(W.Canada) |
Early Jurassic |
|
Micrhystridium |
Micrhystridium sydus
|
Canada(W.Canada) |
Jurassic |
|
Multiplicisphaeridium |
Multiplicisphaeridium vestitum
|
France(Calvados) |
Early Oxfordian |
|
Multiplicisphaeridium |
Multiplicisphaeridium vestitum
|
Canada(W.Canada) |
Kimmeridgian |
|
Opaeopsomus |
Opaeopsomus
|
Canada(W.Canada) |
Kimmeridgian |
|