Baltisphaeridium |
Baltisphaeridium nudatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium pateum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Leiosphaeridia |
Leiosphaeridia conglutinata
|
USSR(Pre-Baltic) |
Proterozoic |
Middle Ordovician |
Baltisphaeridium |
Baltisphaeridium aculeatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Lophodiacrodium |
Lophodiacrodium intertextum
|
USSR(Pre-Baltic) |
Late Cambrian |
|
Leiosphaeridia |
Leiosphaeridia eisenackii
|
USSR(Pre-Baltic) |
Early Ordovician |
Middle Ordovician |
Leiosphaeridia |
Leiosphaeridia faveolata
|
USSR(Pre-Baltic) |
Early Cambrian |
Late Cambrian |
Hystrichosphaeridium |
Hystrichosphaeridium aculeatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium cognitum
|
USSR(Pre-Baltic) |
Early Ordovician |
Middle Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium corollatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium hippocrepicum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium inconspicuum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium nudatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium pateum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Protoleiosphaeridium |
Protoleiosphaeridium conglutinatum
|
USSR(Pre-Baltic) |
Proterozoic |
Middle Ordovician |
Protoleiosphaeridium |
Protoleiosphaeridium faveolatum
|
USSR(Pre-Baltic) |
Early Cambrian |
Late Cambrian |
Protoleiosphaeridium |
Protoleiosphaeridium indefinitum
|
USSR(Pre-Baltic) |
Early Paleozoic |
|