Pirea |
Pirea ornata
|
Nd |
Late Llanvirnian |
|
Pirea |
Pirea ornatissima
|
Nd |
Arenigian |
|
Pirea |
Pirea sinensis
|
Nd |
Arenigian |
|
Pirea |
Pirea transitoria
|
Nd |
Late Llanvirnian |
|
Planctonites |
Planctonites
|
Nd |
Nd |
|
Planctonites |
Planctonites quadrilobatus
|
Nd |
Early Tertiary |
|
Planctonites |
Planctonites stellarius
|
Nd |
Middle Eocene |
|
Platycystidia |
Platycystidia
|
Nd |
Nd |
|
Platycystidia |
Platycystidia diptera
|
Nd |
Late Albian |
Cenomanian |
Platycystidia |
Platycystidia eisenackii
|
Nd |
Aptian |
|
Pleurozonaria |
Pleurozonaria
|
Nd |
Nd |
|
Pleurozonaria |
Pleurozonaria chondrota
|
Nd |
Miocene |
|
Pleurozonaria |
Pleurozonaria concinna
|
Nd |
Neocomian |
|
Pleurozonaria |
Pleurozonaria cooksoniae
|
Nd |
Oligocene |
|
Pleurozonaria |
Pleurozonaria digitata
|
Nd |
Neocomian |
|
Pleurozonaria |
Pleurozonaria distans
|
Nd |
Early Jurassic |
|
Pleurozonaria |
Pleurozonaria diversipora
|
Nd |
Early Jurassic |
|