Alveosphaera |
Alveosphaera alveolata
|
Sweden |
Gorstian |
Early Ludfordian |
Alveosphaera |
Alveosphaera alveolata
|
USSR(Ukrainian SSR) |
Pridolian |
|
Ambitisporites |
Ambitisporites sp
|
Sweden |
Llandoverian |
|
Ammonidium |
Ammonidium
|
Nd |
Nd |
|
Ammonidium |
Ammonidium microcladum
|
Sweden |
Llandoverian |
Early Ludfordian |
Ammonidium |
Ammonidium sp.1 Hill.,1974
sp. nov. |
Sweden |
Llandoverian |
Early Sheinwoodian |
Ammonidium |
Ammonidium waldronense
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium arbusculiferum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium birminghamense
|
Sweden |
Early Llandoverian |
|
Baltisphaeridium |
Baltisphaeridium birminghamense
|
Alabama |
Tarannon |
|
Baltisphaeridium |
Baltisphaeridium cantabricum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium corallinum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium denticulatum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium denticulatum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium fermosum
|
Nd |
Nd |
|
Baltisphaeridium |
Baltisphaeridium furcosum
sp. nov. |
Sweden |
Early Sheinwoodian |
|
Baltisphaeridium |
Baltisphaeridium gotlandicum
|
Nd |
Nd |
|