Anhystrichosphaera |
Anhystrichosphaera multiplex
|
Nd |
Nd |
|
Anthatractus |
Anthatractus insolitus
|
Nd |
Nd |
|
Antrosphaera |
Antrosphaera calloviensis
|
Nd |
Nd |
|
Applanopsis |
Applanopsis dampieri
|
Nd |
Nd |
|
Applanopsis |
Applanopsis lenticularis
|
Nd |
Nd |
|
Aptea |
Aptea polymorpha
|
Nd |
Nd |
|
Apteodinium |
Apteodinium ciliatum
|
Nd |
Nd |
|
Apteodinium |
Apteodinium conjunctum
|
Nd |
Nd |
|
Apteodinium |
Apteodinium granulatum
|
Nd |
Nd |
|
Apteodinium |
Apteodinium maculatum
|
Nd |
Nd |
|
Archaealetes |
Archaealetes antiquus
|
Nd |
Nd |
|
Archaealetes |
Archaealetes antiquus
|
USSR(Baltic) |
Late Cambrian |
|
Archaealetes |
Archaealetes conspersus
|
USSR(Baltic) |
Late Cambrian |
|
Archaealetes |
Archaealetes excisus
|
USSR(Baltic) |
Late Cambrian |
|
Archaealetes |
Archaealetes membranaceus
|
USSR(Baltic) |
Late Cambrian |
|
Archaealetes |
Archaealetes mutabilis
|
USSR(Baltic) |
Middle Cambrian |
|
Archaealetes |
Archaealetes scaber
|
USSR(Baltic) |
Late Cambrian |
|