Poteriochitina |
Poteriochitina lepida
|
England(Shropshire) |
Caradocian |
|
Poumochitina |
Poumochitina
|
Nd |
Nd |
|
Poumochitina |
Poumochitina multiradiata
|
Baltic |
Ordovician |
|
Pterochitina |
Pterochitina deichai
|
Nd |
Nd |
|
Pterochitina |
Pterochitina hymenelytrum
|
Oklahoma |
Late Ordovician |
|
Pterochitina |
Pterochitina macroptera
|
Nd |
Nd |
|
Pterochitina |
Pterochitina perivelata
|
Nd |
Nd |
|
Pterochitina |
Pterochitina retracta
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Ramochitina |
Ramochitina ramosi
|
Brazil(Goias) |
Early Devonian |
|
Retrochitina |
Retrochitina
|
Nd |
Nd |
|
Retrochitina |
Retrochitina retracta
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Retrochitina |
Retrochitina retracta
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Rhabdochitina |
Rhabdochitina canna
|
Nd |
Nd |
|
Rhabdochitina |
Rhabdochitina conocephala
|
Nd |
Nd |
|
Rhabdochitina |
Rhabdochitina festuca
|
Nd |
Nd |
|
Rhabdochitina |
Rhabdochitina gallica
|
France(Aquitaine) |
Llandeilian |
|
Rhabdochitina |
Rhabdochitina magna
|
Nd |
Nd |
|