Conochitina |
Conochitina proboscifera
|
Sweden(Gotland) |
Llandoverian |
Wenlockian |
Conochitina |
Conochitina subcylindrica
|
Nd |
Nd |
|
Cutichitina |
Cutichitina
|
Florida |
Llanvirnian |
|
Cutichitina |
Cutichitina legrandii
|
Nd |
Nd |
|
Cyathochitina |
Cyathochitina
|
Missouri |
Ashgillian |
|
Cyathochitina |
Cyathochitina calix
|
Estonia |
Middle Ordovician |
|
Cyathochitina |
Cyathochitina campanulaeformis
|
New York |
Early Silurian |
|
Cyathochitina |
Cyathochitina campanulaeformis
|
Canada(Ontario) |
Late Ordovician |
|
Cyathochitina |
Cyathochitina hyalophrys
|
Nd |
Ordovician |
|
Cyathochitina |
Cyathochitina kuckersiana
|
Canada(Eastern) |
Late Ordovician |
|
Cyathochitina |
Cyathochitina kuckersiana
|
Nd |
Nd |
|
Cyathochitina |
Cyathochitina kuckersiana
|
Missouri |
Late Ordovician |
|
Cyathochitina |
Cyathochitina kuckersiana
|
Missouri |
Late Ordovician |
|
Cylindrochitina |
Cylindrochitina
|
Nd |
Nd |
|
Desmochitina |
Desmochitina
|
Paraguay |
Early Silurian |
|
Desmochitina |
Desmochitina amphorea
|
Nd |
Nd |
|
Desmochitina |
Desmochitina bulla
|
Nd |
Nd |
|