Acanthodiacrodium |
Acanthodiacrodium scytotomillei
|
Nd |
Tremadocian |
|
Acanthodiacrodium |
Acanthodiacrodium siempreplicatum
|
Nd |
Tremadocian |
Arenigian |
Acanthodiacrodium |
Acanthodiacrodium simplex
|
Nd |
Late Acadian |
Tremadocian |
Acanthodiacrodium |
Acanthodiacrodium simpliciusculum
|
Nd |
Late Llanvirnian |
|
Acanthodiacrodium |
Acanthodiacrodium tasselii
|
Nd |
Tremadocian |
Ashgillian |
Acanthodiacrodium |
Acanthodiacrodium tremadocum
|
Nd |
Tremadocian |
|
Acanthodiacrodium |
Acanthodiacrodium uniforme
|
Nd |
Arenigian |
Llanvirnian |
Adorfia |
Adorfia firma
|
Nd |
Arenigian |
Llanvirnian |
Adorfia |
Adorfia prolongata
|
Nd |
Arenigian |
Llanvirnian |
Anomaloplaisium |
Anomaloplaisium lumariacuspis
|
Nd |
Caradocian |
Ashgillian |
Arbusculidium |
Arbusculidium bicuspidatum
|
Nd |
Arenigian |
Llanvirnian |
Arbusculidium |
Arbusculidium destombesii
|
Nd |
Tremadocian |
Arenigian |
Arbusculidium |
Arbusculidium filamentosum
|
Nd |
Arenigian |
Wenlockian |
Arbusculidium |
Arbusculidium frondiferum
|
Nd |
Tremadocian |
|
Archaeofavosina |
Archaeofavosina venusta
|
Nd |
Georgian |
Potsdamian |
Aremoricanium |
Aremoricanium tenuiprocessum
|
Nd |
Late Llanvirnian |
|
Arkonia |
Arkonia tenuata
|
Nd |
Late Llanvirnian |
|