Trachypsophosphaera |
Trachypsophosphaera asemanta
|
USSR(Vologda) |
Early Devonian |
|
Trachypsophosphaera |
Trachypsophosphaera uspenskyi
|
USSR(Vologda) |
Early Devonian |
|
Discinella |
Discinella asperella
|
USSR(Vologda) |
Early Devonian |
|
Hymenodiscina |
Hymenodiscina sp
|
USSR(Vologda) |
Early Devonian |
|
Baltisphaeridium |
Baltisphaeridium brevispinosum
|
USSR(Vologda) |
Ordovician |
Silurian |
Baltisphaeridium |
Baltisphaeridium incrassatum
|
USSR(Vologda) |
Ordovician |
Silurian |
Baltisphaeridium |
Baltisphaeridium microspinosum
|
USSR(Vologda) |
Ordovician |
Silurian |
Lophosphaeridium |
Lophosphaeridium parverarum
|
USSR(Vologda) |
Ordovician |
Silurian |
Rugosopsophosphaera |
Rugosopsophosphaera diversa
|
USSR(Vologda) |
Ordovician |
Silurian |
Trachypsophosphaera |
Trachypsophosphaera
|
USSR(Vologda) |
Ordovician |
Silurian |
Lophopsophosphaera |
Lophopsophosphaera safes
|
USSR(Vologda) |
Ordovician |
Silurian |
Brochopsophosphaera |
Brochopsophosphaera legibilis
|
USSR(Vologda) |
Ordovician |
Silurian |
Brochopsophosphaera |
Brochopsophosphaera diligens
|
USSR(Vologda) |
Ordovician |
Silurian |
Brochopsophosphaera |
Brochopsophosphaera uralica
|
USSR(Vologda) |
Ordovician |
Silurian |
Trachypsophosphaera |
Trachypsophosphaera
|
USSR(Vologda) |
Ordovician |
Silurian |
Dictyotriletes |
Dictyotriletes peculiaris
|
USSR(Vologda) |
Ordovician |
Silurian |
Lophotriletes |
Lophotriletes lepidus
|
USSR(Vologda) |
Ordovician |
Silurian |