Lagenochitina |
Lagenochitina brevicollis
|
Nd |
Early Ordovician |
|
Lagenochitina |
Lagenochitina esthonica
|
Nd |
Early Ordovician |
|
Lagenochitina |
Lagenochitina maxima
|
Nd |
Early Ordovician |
|
Linochitina |
Linochitina cingulata
|
Nd |
Silurian |
|
Margachitina |
Margachitina margaritana
|
Nd |
Silurian |
|
Ollachitina |
Ollachitina ingens
|
Nd |
Early Ordovician |
Late Tremadocian |
Plectochitina |
Plectochitina carminae
|
Nd |
Silurian |
|
Pterochitina |
Pterochitina perivelata
|
Nd |
Silurian |
|
Ramochitina |
Ramochitina magnifica
|
Nd |
Devonian |
|
Rhabdochitina |
Rhabdochitina hedlundi
|
Nd |
Late Ordovician |
|
Rhabdochitina |
Rhabdochitina magna
|
Nd |
Early Ordovician |
|
Sagenachitina |
Sagenachitina striata
|
Nd |
Early Ordovician |
|
Siphonochitina |
Siphonochitina copulata
|
Nd |
Early Ordovician |
|
Siphonochitina |
Siphonochitina formosa
|
Nd |
Early Ordovician |
|
Siphonochitina |
Siphonochitina veligera
|
Nd |
Early Ordovician |
Late Tremadocian |
Sphaerochitina |
Sphaerochitina longicollis
|
Nd |
Late Ordovician |
Silurian |
Sphaerochitina |
Sphaerochitina pistilliformis
|
Nd |
Silurian |
|