Rhabdochitina |
Rhabdochitina magna
|
Sweden |
Arenigian |
|
Rhabdochitina |
Rhabdochitina magna
|
USSR(Moscow) |
Arenigian |
|
Siphonochitina |
Siphonochitina
|
England(Shropshire) |
Llanvirnian |
|
Spinachitina |
Spinachitina alaticornis
|
Baltic |
Middle Ordovician |
|
Spinachitina |
Spinachitina alaticornis
|
England(Shropshire) |
Caradocian |
|
Spinachitina |
Spinachitina bulmani
|
England(Shropshire) |
Caradocian |
|
Spinachitina |
Spinachitina cervicornis
|
USSR(Estonian SSR) |
Ordovician |
|
Spinachitina |
Spinachitina cervicornis
|
Sweden |
Middle Ordovician |
|
Spinachitina |
Spinachitina multiradiata
|
USSR(Estonian SSR) |
Ordovician |
|
Spinachitina |
Spinachitina multiradiata
|
Sweden |
Middle Ordovician |
|
Tanuchitina |
Tanuchitina bergstroemi
|
Baltic |
Caradocian |
Ashgillian |
Tanuchitina |
Tanuchitina bergstroemi
|
England(Shropshire) |
Caradocian |
Ashgillian |