Acanthochitina |
Acanthochitina
|
Nd |
Late Caradocian |
|
Amphorachitina |
Amphorachitina
|
Nd |
Middle Tremadocian |
Late Llanvirnian |
Amphorachitina |
Amphorachitina conifundus
|
Africa |
Middle Tremadocian |
Late Arenigian |
Amphorachitina |
Amphorachitina elegans
|
Africa |
Middle Tremadocian |
Early Arenigian |
Amphorachitina |
Amphorachitina inflata
|
Africa |
Llanvirnian |
|
Amphorachitina |
Amphorachitina inflata
|
Nd |
Llanvirnian |
|
Ancyrochitina |
Ancyrochitina
|
Nd |
Late Llandeilian |
Late Famennian |
Ancyrochitina |
Ancyrochitina aculeata
|
Nd |
Late Llandoverian |
Late Wenlockian |
Ancyrochitina |
Ancyrochitina ancyrea
|
Nd |
Early Wenlockian |
Late Givetian |
Ancyrochitina |
Ancyrochitina clavata
|
Nd |
Late Ordovician |
Early Gothlandian |
Ancyrochitina |
Ancyrochitina desmea
|
Nd |
Early Gothlandian |
|
Ancyrochitina |
Ancyrochitina fragilis
|
Nd |
Early Gothlandian |
|
Ancyrochitina |
Ancyrochitina microspinata
|
Nd |
Late Ordovician |
|
Ancyrochitina |
Ancyrochitina multiramosa
|
Nd |
Middle Ludlovian |
Late Ludlovian |
Ancyrochitina |
Ancyrochitina mystacora
|
Nd |
Late Ordovician |
|
Ancyrochitina |
Ancyrochitina pilosa
|
Nd |
Early Gothlandian |
|
Ancyrochitina |
Ancyrochitina primitiva
|
Nd |
Early Gothlandian |
|