Acanthochitina |
Acanthochitina barbata
|
England |
Late Ordovician |
|
Acanthochitina |
Acanthochitina barbata
|
Africa |
Late Ordovician |
|
Acanthochitina |
Acanthochitina barbata
|
Europe |
Late Ordovician |
|
Acanthochitina |
Acanthochitina barbata
|
Scotland |
Late Ordovician |
|
Armoricochitina |
Armoricochitina nigerica
|
Nd |
Late Ordovician |
|
Belonechitina |
Belonechitina robusta
|
Nd |
Late Ordovician |
|
Calpichitina |
Calpichitina lenticularis
|
Nd |
Late Ordovician |
|
Conochitina |
Conochitina hirsuta
|
Nd |
Middle Ordovician |
|
Conochitina |
Conochitina kyros
|
Nd |
Early Ordovician |
|
Conochitina |
Conochitina pirum
|
Australia |
Middle Ordovician |
|
Conochitina |
Conochitina pirum
|
Mexico |
Middle Ordovician |
|
Conochitina |
Conochitina poumoti
|
Nd |
Early Ordovician |
|
Conochitina |
Conochitina raymondii
|
Nd |
Early Ordovician |
|
Conochitina |
Conochitina subcylindrica
|
Australia |
Middle Ordovician |
|
Conochitina |
Conochitina subcylindrica
|
Mexico |
Middle Ordovician |
|
Cyathochitina |
Cyathochitina jenkinsi
|
Nd |
Middle Ordovician |
|
Desmochitina |
Desmochitina juglandiformis
|
Nd |
Late Ordovician |
|