Perotrilites |
Perotrilites microbaculatus
|
England(Shropshire) |
Middle Gedinnian |
|
Pithonella |
Pithonella
|
Nd |
Nd |
|
Pseudodyadospora |
Pseudodyadospora petasus
|
Scotland |
Sheinwoodian |
|
Qualisaspora |
Qualisaspora
|
Scotland(Angus) |
Early Gedinnian |
|
Qualisaspora |
Qualisaspora fragilis
|
Scotland(Angus) |
Early Gedinnian |
|
Reticulate |
Reticulate monads
|
Nd |
Gedinnian |
|
Retusotriletes |
Retusotriletes
|
Nd |
Gorstian |
Gedinnian |
Retusotriletes |
Retusotriletes coranadus
|
Nd |
Nd |
|
Retusotriletes |
Retusotriletes coranadus
|
England |
Early Downtonian |
|
Rhizophora |
Rhizophora mangle
|
Nd |
Nd |
|
Rimosotetras |
Rimosotetras
|
Nd |
Nd |
|
Rimosotetras |
Rimosotetras problematica
|
Scotland |
Sheinwoodian |
|
Rimosotetras |
Rimosotetras problematica
|
Nd |
Caradocian |
Rhuddanian |
Rugosphaera |
Rugosphaera
|
Nd |
Nd |
|
Rugosphaera |
Rugosphaera cerebra
|
Nd |
Nd |
|
Rugosphaera |
Rugosphaera cerebra
|
Nd |
Caradocian |
Early Aeronian |
Rugosphaera |
Rugosphaera tuscarorensis
|
Nd |
Caradocian |
Early Aeronian |