Aremoricanium |
Aremoricanium erchunense
|
China(Shanghai) |
Tremadocian |
Arenigian |
Asketopalla |
Asketopalla formosula
|
China(Shanghai) |
Tremadocian |
|
Asketopalla |
Asketopalla sp
|
China(Shanghai) |
Tremadocian |
Arenigian |
Baltisphaeridium |
Baltisphaeridium acanthaceum
|
China(Shanghai) |
Arenigian |
|
Baltisphaeridium |
Baltisphaeridium acanthaceum
|
USSR(Pre-Baltic) |
Middle Cambrian |
Late Cambrian |
Baltisphaeridium |
Baltisphaeridium accomodatum
|
China(Shanghai) |
Tremadocian |
|
Baltisphaeridium |
Baltisphaeridium accomodatum
|
China(Shanghai) |
Tremadocian |
Arenigian |
Baltisphaeridium |
Baltisphaeridium acerosum
|
China(Shanghai) |
Arenigian |
|
Baltisphaeridium |
Baltisphaeridium akrochordum
|
China(Shanghai) |
Arenigian |
|
Baltisphaeridium |
Baltisphaeridium akrochordum
|
China(Shanghai) |
Tremadocian |
Arenigian |
Baltisphaeridium |
Baltisphaeridium annulatum
|
China(Shanghai) |
Arenigian |
|
Baltisphaeridium |
Baltisphaeridium annulatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Baltisphaeridium |
Baltisphaeridium arenigum
|
China(Shanghai) |
Tremadocian |
Arenigian |
Baltisphaeridium |
Baltisphaeridium brevifilicum
|
China(Shanghai) |
Arenigian |
|
Baltisphaeridium |
Baltisphaeridium brevispinosum
|
China(Shanghai) |
Tremadocian |
Arenigian |
Baltisphaeridium |
Baltisphaeridium brevispinosum
|
China(Shanghai) |
Tremadocian |
Arenigian |
Baltisphaeridium |
Baltisphaeridium clavicinctum
|
China(Shanghai) |
Arenigian |
|