Acriora |
Acriora petala
|
Nd |
Late Devonian |
|
Acrum |
Acrum
|
Nd |
Nd |
|
Acrum |
Acrum cylindriferum
|
Nd |
Early Cambrian |
|
Acrum |
Acrum membranosum
|
Nd |
Early Cambrian |
Middle Cambrian |
Acrum |
Acrum novum
|
Nd |
Early Cambrian |
Middle Cambrian |
Acrum |
Acrum radiale
|
Nd |
Early Cambrian |
Middle Cambrian |
Actinotodissus |
Actinotodissus
|
Nd |
Nd |
|
Actinotodissus |
Actinotodissus achrasii
|
Nd |
Tremadocian |
|
Actinotodissus |
Actinotodissus baltica
|
Nd |
Early Ordovician |
|
Actinotodissus |
Actinotodissus crassus
|
Nd |
Late Caradocian |
|
Actinotodissus |
Actinotodissus longitaleosus
|
Nd |
Llandeilian |
|
Actinotodissus |
Actinotodissus rarus
|
Nd |
Arenigian |
|
Actinotodissus |
Actinotodissus ubuii
|
Belgium |
Early Tremadocian |
|
Actinotophasis |
Actinotophasis
|
Nd |
Nd |
|
Actinotophasis |
Actinotophasis complurilata
|
Nd |
Late Gedinnian |
|
Actipilion |
Actipilion
|
Nd |
Nd |
|
Actipilion |
Actipilion druggii
|
Nd |
Late Ordovician |
|