Psenotopus |
Psenotopus chondrocheus
|
Worldwide |
Late Aeronian |
Homerian |
Pseudolunulidia |
Pseudolunulidia laevigata
|
Nd |
Nd |
|
Pterospermella |
Pterospermella
|
Nd |
Nd |
|
Pterospermella |
Pterospermella circumstriata
|
Oklahoma |
Gedinnian |
|
Pterospermella |
Pterospermella circumstriata
|
Nd |
Gedinnian |
Emsian |
Pterospermella |
Pterospermella hermosita
|
Nd |
Gedinnian |
Givetian |
Pterospermella |
Pterospermella solida
|
Poland |
Cambrian |
|
Pterospermella |
Pterospermella solida
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Pterospermella |
Pterospermella velata
|
Poland |
Early Cambrian |
|
Pterospermella |
Pterospermella vitalis
|
Poland |
Early Cambrian |
|
Pterospermella |
Pterospermella vitalis
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Pterospermopsimorpha |
Pterospermopsimorpha
|
Nd |
Nd |
|
Pulvinosphaeridium |
Pulvinosphaeridium pulvinellum
|
Worldwide |
Telychian |
Homerian |
Puteoscortum |
Puteoscortum williereae
|
Nd |
Nd |
|
Pytinomorpha |
Pytinomorpha martiniae
|
Nd |
Nd |
|
Quadraditum |
Quadraditum fantasticum
|
Nd |
Gedinnian |
|
Raphesphaera |
Raphesphaera obsoleta
|
USSR(Russian Platform) |
Late Cambrian |
|