Rhombodella |
Rhombodella vesca
|
Nd |
Barremian |
|
Rhopaliophora |
Rhopaliophora
|
Nd |
Nd |
|
Rhopaliophora |
Rhopaliophora brevituberculata
|
Nd |
Middle Ordovician |
|
Rhopaliophora |
Rhopaliophora foliatilis
|
Nd |
Caradocian |
|
Rhopaliophora |
Rhopaliophora impexa
|
Nd |
Caradocian |
|
Rhopaliophora |
Rhopaliophora mamilliformis
|
Nd |
Arenigian |
|
Rhopaliophora |
Rhopaliophora membrana
|
Nd |
Arenigian |
|
Rhopaliophora |
Rhopaliophora palmata
|
Nd |
Ordovician |
|
Rhopaliophora |
Rhopaliophora pilata
|
Nd |
Ordovician |
|
Riculasphaera |
Riculasphaera
|
Nd |
Nd |
|
Riculasphaera |
Riculasphaera fissa
|
Nd |
Late Gedinnian |
|
Riculasphaera |
Riculasphaera loeblichii
|
Nd |
Late Emsian |
|
Rimosicysta |
Rimosicysta
|
Nd |
Nd |
|
Rimosicysta |
Rimosicysta aspera
|
Nd |
Turonian |
Coniacian |
Rimosicysta |
Rimosicysta concava
|
Nd |
Turonian |
Coniacian |
Rimosicysta |
Rimosicysta cucullata
|
Nd |
Turonian |
Coniacian |
Rimosicysta |
Rimosicysta eversa
|
Nd |
Turonian |
Coniacian |