Micrhystridium |
Micrhystridium ariakense
|
Japan(Kyushu I.) |
Pleistocene |
|
Micrhystridium |
Micrhystridium asagaiense
|
Japan |
Oligocene |
|
Micrhystridium |
Micrhystridium assuetum
|
USSR |
Silurian |
|
Micrhystridium |
Micrhystridium aster
|
North America |
Early Cretaceous |
Middle Cretaceous |
Micrhystridium |
Micrhystridium aster
|
Atlantic Coast Offshore |
Hauterivian |
Early Albian |
Micrhystridium |
Micrhystridium asymmetricum
|
Ohio |
Late Devonian |
|
Micrhystridium |
Micrhystridium bacilliferum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium baculiferum
|
South Korea |
Miocene |
|
Micrhystridium |
Micrhystridium bahamense
|
Atlantic Coast Offshore |
Berriasian |
Valanginian |
Micrhystridium |
Micrhystridium bahamense
|
North America |
Early Cretaceous |
|
Micrhystridium |
Micrhystridium balmei
|
Pakistan |
Early Triassic |
|
Micrhystridium |
Micrhystridium bernardinae
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium bifidum
|
England(Surrey) |
Late Cretaceous |
|
Micrhystridium |
Micrhystridium bifurcatum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium bigotii
|
France |
Middle Jurassic |
|
Micrhystridium |
Micrhystridium biornatum
|
France |
Late Cretaceous |
|
Micrhystridium |
Micrhystridium bistchoense
|
Canada(Alberta) |
Late Devonian |
|