Pirumella |
Pirumella bassriverensis
|
Nd |
Nd |
|
Pirumella |
Pirumella bilamellata
|
Nd |
Nd |
|
Pirumella |
Pirumella carteri
|
Nd |
Nd |
|
Pirumella |
Pirumella cookii
|
Nd |
Nd |
|
Pirumella |
Pirumella cumulosa
|
Nd |
Late Cenomanian |
|
Pirumella |
Pirumella cylindrica
|
Nd |
Nd |
|
Pirumella |
Pirumella echinosa
|
Nd |
Nd |
|
Pirumella |
Pirumella edgarii
|
Nd |
Nd |
|
Pirumella |
Pirumella edithvincentiae
|
Nd |
Nd |
|
Pirumella |
Pirumella fusiformis
|
Nd |
Nd |
|
Pirumella |
Pirumella heirtzleri
|
Nd |
Nd |
|
Pirumella |
Pirumella hystrichosphaeroidea
|
Nd |
Late Cenomanian |
|
Pirumella |
Pirumella irregularis
|
Nd |
Recent |
|
Pirumella |
Pirumella johnstonei
|
Nd |
Nd |
|
Pirumella |
Pirumella krasheninnikovii
|
Nd |
Nd |
|
Pirumella |
Pirumella labyrinthica
|
Nd |
Middle Cenomanian |
|
Pirumella |
Pirumella laquaeta
|
Nd |
Early Aptian |
|