Tetrahedraletes |
Tetrahedraletes medinensis
|
Canada(Nova Scotia) |
Ashgillian |
Pridolian |
Velatitetras |
Velatitetras cristata
|
Canada(Nova Scotia) |
Homerian |
|
Vermiverruspora |
Vermiverruspora
|
Wales(Glamorgan) |
Gorstian |
|
Vermiverruspora |
Vermiverruspora paravermiculata
|
|
Givetian |
Early Frasnian |
Vermiverruspora |
Vermiverruspora pattersonii
|
Scotland(Strathclyde) |
Lochkovian |
|
Vermiverruspora |
Vermiverruspora retorrida
|
Poland |
Gedinnian |
|
Vermiverruspora |
Vermiverruspora rumneyi
|
Canada(Nova Scotia) |
Homerian |
|
Vermiverruspora |
Vermiverruspora rumneyi
|
Wales(Glamorgan) |
Gorstian |
|
Vermiverruspora |
Vermiverruspora vermiculata
|
Wales |
Early Gedinnian |
|
Vermiverruspora |
Vermiverruspora vermiculata
|
Wales |
Early Gedinnian |
|
Vermiverruspora |
Vermiverruspora vermoluta
|
Wales(Glamorgan) |
Ludfordian |
|
Verrucate Cryptospore |
Verrucate Cryptospore sp
|
Canada(Nova Scotia) |
Ludfordian |
|