Acanthodiacrodium |
Acanthodiacrodium angustum
|
Tunisia |
Arenigian |
|
Acanthodiacrodium |
Acanthodiacrodium costatum
|
Spain |
Early Llanvirnian |
|
Acanthodiacrodium |
Acanthodiacrodium sp
|
Czechoslovakia(Bohemia) |
Arenigian |
|
Acanthodiacrodium |
Acanthodiacrodium sp
|
Belgium |
Early Llanvirnian |
|
Acanthodiacrodium |
Acanthodiacrodium sp
|
Sweden |
Late Arenigian |
Early Llanvirnian |
Ampullula |
Ampullula suetica
|
Sweden |
Late Arenigian |
Early Llanvirnian |
Arbusculidium |
Arbusculidium filamentosum
|
Baltic |
Early Arenigian |
|
Arbusculidium |
Arbusculidium filamentosum
|
Czechoslovakia(Bohemia) |
Arenigian |
|
Arbusculidium |
Arbusculidium sp
|
Baltic |
Early Arenigian |
|
Arbusculidium |
Arbusculidium sp
|
China(Hupei) |
Late Arenigian |
|
Arkonia |
Arkonia sp
|
Spain |
Early Llanvirnian |
|
Arkonia |
Arkonia sp
|
Belgium |
Early Llanvirnian |
|
Arkonia |
Arkonia tenuata
|
Tunisia |
Early Llanvirnian |
|
Baltisphaeridium |
Baltisphaeridium annelieae
|
Sweden |
Late Arenigian |
Early Llanvirnian |
Baltisphaeridium |
Baltisphaeridium calicispinae
|
Sweden |
Late Arenigian |
Early Llanvirnian |
Baltisphaeridium |
Baltisphaeridium denticulatum
|
Baltic |
Early Arenigian |
|
Baltisphaeridium |
Baltisphaeridium hirsutoides
|
Sweden |
Late Arenigian |
Early Llanvirnian |