Peteinosphaeridium |
Peteinosphaeridium nudum
|
USSR(Orenburg) |
Late Ordovician |
|
Multiplicisphaeridium |
Multiplicisphaeridium orbusculiferum
|
USSR(Orenburg) |
Late Ordovician |
|
Lophosphaeridium |
Lophosphaeridium papillatum
|
USSR(Orenburg) |
Late Ordovician |
|
Goniosphaeridium |
Goniosphaeridium conjunctum
|
USSR(Orenburg) |
Late Ordovician |
|
Goniosphaeridium |
Goniosphaeridium paucispinum
|
USSR(Orenburg) |
Late Ordovician |
|
Veryhachium |
Veryhachium horridum
|
USSR(Orenburg) |
Late Ordovician |
|
Veryhachium |
Veryhachium pulvillum
|
USSR(Orenburg) |
Late Ordovician |
|
Lagenochitina |
Lagenochitina baltica
|
USSR(Orenburg) |
Late Ordovician |
|
Lagenochitina |
Lagenochitina prussica
|
USSR(Orenburg) |
Late Ordovician |
|
Conochitina |
Conochitina cactacea
|
USSR(Orenburg) |
Late Ordovician |
|
Conochitina |
Conochitina chydaea
|
USSR(Orenburg) |
Late Ordovician |
|
Tanuchitina |
Tanuchitina bergstroemi
|
USSR(Orenburg) |
Late Ordovician |
|
Cyathochitina |
Cyathochitina jenkinsi
|
USSR(Orenburg) |
Late Ordovician |
|
Rhabdochitina |
Rhabdochitina turgida
|
USSR(Orenburg) |
Late Ordovician |
|
Siphonochitina |
Siphonochitina clavata
|
USSR(Orenburg) |
Middle Ordovician |
|
Cyathochitina |
Cyathochitina campanulaeformis
|
USSR(Orenburg) |
Middle Ordovician |
|
Retusotriletes |
Retusotriletes divulgatus
|
USSR(Orenburg) |
Early Eifelian |
|