Actinotodissus |
Actinotodissus sp.A
sp. nov. |
Canada(Alberta) |
Late Cambrian |
Tremadocian |
Comasphaeridium |
Comasphaeridium strigosum
|
Canada(Alberta) |
Early Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium glabrum
|
Canada(Alberta) |
Early Tremadocian |
|
Athabascaella |
Athabascaella penika
|
Canada(Alberta) |
Tremadocian |
|
Aryballomorpha |
Aryballomorpha sp.A
sp. nov. |
Canada(Alberta) |
Tremadocian |
|
Goniosphaeridium |
Goniosphaeridium pungens
|
Canada(Alberta) |
Tremadocian |
Early Arenigian |
Peteinosphaeridium |
Peteinosphaeridium breviradiatum
|
Canada(Alberta) |
Late Tremadocian |
Early Arenigian |
Ammonidium |
Ammonidium furtivum
|
Canada(Alberta) |
Early Arenigian |
|
Acanthodiacrodium |
Acanthodiacrodium angustum
|
Canada(Newfoundland) |
Late Cambrian |
Ordovician |
Acanthodiacrodium |
Acanthodiacrodium complanatum
|
Canada(Newfoundland) |
Late Cambrian |
Ordovician |
Actinotodissus |
Actinotodissus achrasii
|
Canada(Newfoundland) |
Late Cambrian |
Ordovician |
Adara |
Adara alea
|
Canada(Newfoundland) |
Middle Cambrian |
|
Annulum |
Annulum squamaceum
|
Canada(Newfoundland) |
Middle Cambrian |
|
Arbusculidium |
Arbusculidium destombesii
|
Canada(Newfoundland) |
Late Cambrian |
Ordovician |
Arbusculidium |
Arbusculidium rommelaerei
|
Canada(Newfoundland) |
Late Cambrian |
Ordovician |
Baltisphaeridium |
Baltisphaeridium crinitum
|
Canada(Newfoundland) |
Late Cambrian |
Ordovician |
Coryphidium |
Coryphidium bohemicum
|
Canada(Newfoundland) |
Arenigian |
|