Hystrichosphaeridium |
Hystrichosphaeridium ordovicum
|
USSR(Russian Platform) |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium pateum
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium picorricum
|
USSR(Russian Platform) |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium picorricum
|
Spain |
Middle Siegenian |
Emsian |
Hystrichosphaeridium |
Hystrichosphaeridium polyradiatum
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium quadriradiatum
|
USSR(Russian Platform) |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium rjabininii
|
USSR(Russian Platform) |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium rotundatum
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium scapigerum
|
USSR(Russian Platform) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium sp
|
USSR(Russian Platform) |
Early Ordovician |
Late Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium subrecurvum
|
USSR(Russian Platform) |
Early Ordovician |
|
Laminarites |
Laminarites antiquissimus
|
USSR(Russian Platform) |
Late Proterozoic |
|
Laminarites |
Laminarites antiquissimus
|
USSR(Russian Platform) |
Early Cambrian |
|
Laminarites |
Laminarites cavernosus
|
USSR(Russian Platform) |
Late Proterozoic |
|
Leiofusa |
Leiofusa sp
|
USSR(Russian Platform) |
Tremadocian |
|
Leiofusa |
Leiofusa striatifera
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Leiofusa |
Leiofusa vittatum
|
USSR(Russian Platform) |
Tremadocian |
|