Impardecispora |
Impardecispora apiverrucata
|
North America |
Berriasian |
Albian |
Impardecispora |
Impardecispora crassa
|
North America |
Aptian |
Early Cenomanian |
Impardecispora |
Impardecispora crassa
|
Canada(Alberta) |
Late Aptian |
Early Albian |
Impardecispora |
Impardecispora gibberula
|
Canada(Alberta) |
Late Aptian |
Early Albian |
Impardecispora |
Impardecispora gibberula
|
North America |
Berriasian |
Albian |
Impardecispora |
Impardecispora humilis
|
Montana |
Late Barremian |
Early Aptian |
Impardecispora |
Impardecispora humilis
|
North America |
Hauterivian |
Albian |
Impardecispora |
Impardecispora marylandensis
|
Canada(Alberta) |
Late Aptian |
Early Albian |
Impardecispora |
Impardecispora marylandensis
|
North America |
Valanginian |
Albian |
Impardecispora |
Impardecispora minor
|
Canada(Alberta) |
Late Barremian |
Early Aptian |
Impardecispora |
Impardecispora minor
|
North America |
Late Hauterivian |
Early Albian |
Impardecispora |
Impardecispora purverulenta
|
Canada(Alberta) |
Late Aptian |
Early Albian |
Impardecispora |
Impardecispora purverulenta
|
North America |
Berriasian |
Albian |
Impardecispora |
Impardecispora steepbankensis
|
Canada(Alberta) |
Late Barremian |
Early Albian |
Impardecispora |
Impardecispora steepbankensis
|
Montana |
Barremian |
Early Aptian |
Impardecispora |
Impardecispora steepbankensis
sp. nov. |
Canada(Alberta) |
Late Aptian |
Early Albian |
Impardecispora |
Impardecispora tribotrys
|
Canada(Alberta) |
Late Barremian |
Early Albian |