Ampullachitina |
Ampullachitina laguncula
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina aculeata
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina aculeata
|
Algeria |
Early Devonian |
Late Devonian |
Ancyrochitina |
Ancyrochitina aequoris
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina alaticornis
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina ancyrea
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina arkonensis
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina biconstricta
|
|
Early Devonian |
|
Ancyrochitina |
Ancyrochitina brevispinosa
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina brevispinosa
|
Baltic |
Ordovician |
Silurian |
Ancyrochitina |
Ancyrochitina bulmanii
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina corniculans
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina cornigera
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina curta
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina densebarbata
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina desmea
|
Sweden |
Silurian |
|
Ancyrochitina |
Ancyrochitina effusa
|
France(Aquitaine) |
Llandeilian |
|