Hystrichosphaeridium |
Hystrichosphaeridium peritropum
|
USSR(Russian Platform) |
Arenigian |
|
Acanthosphaeridium |
Acanthosphaeridium hirsutum
|
USSR(Russian Platform) |
Arenigian |
|
Acanthosphaeridium |
Acanthosphaeridium pilosum
|
USSR(Russian Platform) |
Arenigian |
|
Zonosphaeridium |
Zonosphaeridium obscurum
|
USSR(Russian Platform) |
Arenigian |
|
Lophosphaeridium |
Lophosphaeridium plicatum
|
USSR(Russian Platform) |
Arenigian |
|
Protoleiosphaeridium |
Protoleiosphaeridium constructum
|
USSR(Russian Platform) |
Llandeilian |
|
Leiosphaeridium |
Leiosphaeridium eisenackii
|
USSR(Russian Platform) |
Llandeilian |
|
Leiosphaeridium |
Leiosphaeridium glomerosum
|
USSR(Russian Platform) |
Llandeilian |
|
Zonosphaeridium |
Zonosphaeridium statum
|
USSR(Russian Platform) |
Llandeilian |
|
Zonosphaeridium |
Zonosphaeridium limpatum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichotriangulatum |
Hystrichotriangulatum lucidylum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichotriangulatum |
Hystrichotriangulatum abbreviatum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichotriangulatum |
Hystrichotriangulatum marginulatum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichotriangulatum |
Hystrichotriangulatum convexum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium scabridum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium ocuminatum
|
USSR(Russian Platform) |
Llandeilian |
|
Hystrichosphaeridium |
Hystrichosphaeridium bipartibilum
|
USSR(Russian Platform) |
Llandeilian |
|