Micrhystridium |
Micrhystridium harlandii
|
Canada(Saskatchewan) |
Middle Santonian |
Maastrichtian |
Micrhystridium |
Micrhystridium harlandii
|
Canada(Alberta) |
Middle Santonian |
Late Santonian |
Micrhystridium |
Micrhystridium harlandii
|
Canada(Manitoba) |
Middle Campanian |
|
Micrhystridium |
Micrhystridium harlandii
|
North Dakota |
Middle Santonian |
Late Santonian |
Micrhystridium |
Micrhystridium harlandii
|
Texas |
Late Austinian |
Tayloran |
Micrhystridium |
Micrhystridium harlandii
|
Wyoming |
Campanian |
|
Micrhystridium |
Micrhystridium harlandii
sp. nov. |
Canada(Saskatchewan) |
Early Campanian |
|
Micrhystridium |
Micrhystridium piliferum
|
Canada(Saskatchewan) |
Late Campanian |
Maastrichtian |
Micrhystridium |
Micrhystridium piliferum
|
Canada(Manitoba) |
Late Campanian |
|
Micrhystridium |
Micrhystridium piliferum
|
Texas |
Late Tayloran |
|
Micrhystridium |
Micrhystridium piliferum
|
Wyoming |
Campanian |
|
Micrhystridium |
Micrhystridium reticulatum
|
Canada(Saskatchewan) |
Late Campanian |
Maastrichtian |
Micrhystridium |
Micrhystridium reticulatum
|
Wyoming |
Campanian |
|
Micrhystridium |
Micrhystridium singulare
|
Canada(Manitoba) |
Late Campanian |
Maastrichtian |
Micrhystridium |
Micrhystridium singulare
|
Texas |
Tayloran |
|
Micrhystridium |
Micrhystridium sp.A Harl.,1973
sp. nov. |
Canada(Saskatchewan) |
Early Campanian |
|
Micrhystridium |
Micrhystridium sp.C Harl.,1973
sp. nov. |
Wyoming |
Campanian |
|