Acanthochitina |
Acanthochitina barbata
|
Worldwide |
Late Onnian |
Early Pushgillian |
Acanthochitina |
Acanthochitina barbata
|
Worldwide |
Pushgillian |
Cautleyan |
Acanthochitina |
Acanthochitina cancellata
|
Worldwide |
Nd |
|
Alpenachitina |
Alpenachitina eisenacki
|
Worldwide |
Eifelian |
Early Givetian |
Alpenachitina |
Alpenachitina eisenacki
|
Libya |
Eifelian |
|
Alpenachitina |
Alpenachitina petrovinensis
|
South America |
Early Givetian |
|
Amphorachitina |
Amphorachitina conifundus
|
Nd |
Late Tremadocian |
Early Moridunian |
Ancyrochitina |
Ancyrochitina aequoris
|
Nd |
Givetian |
|
Ancyrochitina |
Ancyrochitina asterigis
|
Gondwanaland |
Early Lochkovian |
|
Ancyrochitina |
Ancyrochitina aurita
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina convexa
|
Gondwanaland |
Early Aeronian |
|
Ancyrochitina |
Ancyrochitina cornigera
|
Gondwanaland |
Early Givetian |
|
Ancyrochitina |
Ancyrochitina desmea
|
Worldwide |
Late Gorstian |
Early Ludfordian |
Ancyrochitina |
Ancyrochitina desmea
|
Sweden(Gotland) |
Ludlovian |
|
Ancyrochitina |
Ancyrochitina fragilis
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina hamiltonensis
|
Gondwanaland |
Early Givetian |
|
Ancyrochitina |
Ancyrochitina laevaensis
|
Baltic |
Early Rhuddanian |
|