Rhabdochitina |
Rhabdochitina regularis
|
USSR(Siberia) |
Llandoverian |
|
Rhabdochitina |
Rhabdochitina truncata
|
USSR(Siberia) |
Llandoverian |
|
Rhabdochitina |
Rhabdochitina truncata
|
USSR(Siberia) |
Middle Llandoverian |
|
Sphaerochitina |
Sphaerochitina elegans
|
USSR(Siberia) |
Ludlovian |
|
Sphaerochitina |
Sphaerochitina sphaerocephala
|
USSR(Siberia) |
Llandoverian |
|
Sphaerochitina |
Sphaerochitina sphaerocephala
|
USSR(Siberia) |
Ludlovian |
|
Steneyochitina |
Steneyochitina ovatoelongata
|
USSR(Siberia) |
Llandoverian |
|
Steneyochitina |
Steneyochitina ovatoelongata
|
USSR(Siberia) |
Middle Llandoverian |
Late Llandoverian |
Tanuchitina |
Tanuchitina cylindrica
|
USSR(Siberia) |
Llandoverian |
|
Tanuchitina |
Tanuchitina cylindrica
|
USSR(Siberia) |
Middle Llandoverian |
|