Acanthochitina |
Acanthochitina barbata
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp. Acha.,1981
sp. nov. |
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp.1
sp. nov. |
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp.2
sp. nov. |
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina sp.3
sp. nov. |
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina spongiosa
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina spongiosa
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Angochitina |
Angochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Angochitina |
Angochitina sp.1
sp. nov. |
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Clathrochitina |
Clathrochitina sp
|
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |
Clathrochitina |
Clathrochitina sp.1 Acha.,1981
sp. nov. |
Canada(Anticosti Island) |
Late Ordovician |
Early Gothlandian |