Hystrichosphaera |
Hystrichosphaera ramosa
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera tenuicapillata
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium trifurcatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium trifurcatum
|
Nd |
Nd |
|
Lagenochitina |
Lagenochitina esthonica
|
USSR(Novgorod) |
Arenigian |
|
Lagenochitina |
Lagenochitina pestovoensis
sp. nov. |
USSR(Novgorod) |
Arenigian |
|
Leiosphaera |
Leiosphaera sp
|
USSR(Ukrainian SSR) |
Middle Ludlovian |
|
Margachitina |
Margachitina elliptica
sp. nov. |
USSR(Ukrainian SSR) |
Middle Ludlovian |
|
Margachitina |
Margachitina margaritana
sp. nov. |
USSR(Ukrainian SSR) |
Middle Ludlovian |
|
Margachitina |
Margachitina margaritana
|
USSR(Ukrainian SSR) |
Middle Ludlovian |
|
Margachitina |
Margachitina margaritana
|
USSR(Latvian SSR) |
Wenlockian |
|
Pachyfavosites |
Pachyfavosites kozlowskyi
|
USSR(Ukrainian SSR) |
Middle Ludlovian |
|
Parachitina |
Parachitina curvata
|
USSR(Leningrad) |
Middle Ordovician |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
Poland |
Ordovician |
|
Plectochitina |
Plectochitina carminae
|
Spain |
Late Gothlandian |
Early Devonian |
Rhabdochitina |
Rhabdochitina sp
|
USSR(Novgorod) |
Llandeilian |
|
Sphaerochitina |
Sphaerochitina brevispinosa
|
USSR(Ukrainian SSR) |
Late Ludlovian |
|