Medullina |
Medullina triquetrellaeformis
|
USSR(Ukrainian SSR) |
Toarcian |
Bajocian |
Monosulcites |
Monosulcites
|
USSR(Ukrainian SSR) |
Rhaetian |
Bajocian |
Monosulcites |
Monosulcites dilucidus
|
USSR(Ukrainian SSR) |
Rhaetian |
Toarcian |
Monosulcites |
Monosulcites dilucidus
|
USSR(Siberia) |
Jurassic |
Cretaceous |
Monosulcites |
Monosulcites granulosus
sp. nov. |
USSR(Ukrainian SSR) |
Rhaetian |
|
Monosulcites |
Monosulcites medius
|
USSR(Ukrainian SSR) |
Rhaetian |
Toarcian |
Monosulcites |
Monosulcites medius
|
USSR(Siberia) |
Jurassic |
Early Cretaceous |
Monosulcites |
Monosulcites subcaperatus
|
USSR(Ukrainian SSR) |
Toarcian |
Bajocian |
Neoraistrickia |
Neoraistrickia aculeata
sp. nov. |
USSR(Ukrainian SSR) |
Aalenian |
Bajocian |
Neoraistrickia |
Neoraistrickia cepuliniformis
|
USSR(Ukrainian SSR) |
Early Jurassic |
|
Neoraistrickia |
Neoraistrickia rotundiforma
|
USSR(Ukrainian SSR) |
Aalenian |
Bajocian |
Osmunda |
Osmunda crassirimosa
|
USSR(Ukrainian SSR) |
Toarcian |
|
Osmunda |
Osmunda densiornamentata
|
USSR(Ukrainian SSR) |
Early Jurassic |
Bajocian |
Osmunda |
Osmunda densiornamentata
|
USSR(WSL) |
Middle Jurassic |
|
Osmunda |
Osmunda echinata
|
USSR(Ukrainian SSR) |
Toarcian |
Bajocian |
Osmunda |
Osmunda echinata
|
USSR(WSL) |
Early Jurassic |
Middle Jurassic |
Osmunda |
Osmunda nicanica
|
USSR(Ukrainian SSR) |
Toarcian |
Bajocian |