Hystrichosphaeridium |
Hystrichosphaeridium rjabininii
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium quadriradiatum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium reticulatum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaera |
Hystrichosphaera cornuta
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium corniformis
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium sectum
|
USSR(Russian Platform) |
Llandeilian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium solitare
|
USSR(Russian Platform) |
Llandeilian |
|
Leioarachnitum |
Leioarachnitum diaphanum
|
USSR(Russian Platform) |
Llandeilian |
|
Protoleiosphaeridium |
Protoleiosphaeridium placentiformis
|
USSR(Russian Platform) |
Llandeilian |
|
Acanthosphaeridium |
Acanthosphaeridium cuspidatum
|
USSR(Russian Platform) |
Llandeilian |
|
Lophosphaeridium |
Lophosphaeridium subtilum
|
USSR(Russian Platform) |
Llandeilian |
|
Lophosphaeridium |
Lophosphaeridium ruidum
|
USSR(Russian Platform) |
Llandeilian |
|
Leiosphaeridium |
Leiosphaeridium pertusum
|
USSR(Russian Platform) |
Silurian |
|
Leiosphaeridium |
Leiosphaeridium emergensum
|
USSR(Russian Platform) |
Silurian |
|
Leiosphaeridium |
Leiosphaeridium eisenackii
|
USSR(Russian Platform) |
Silurian |
|
Leiosphaeridium |
Leiosphaeridium sphaericum
|
USSR(Russian Platform) |
Silurian |
|
Leiosphaeridium |
Leiosphaeridium discoideum
|
USSR(Russian Platform) |
Silurian |
|