Perisaccus |
Perisaccus verruculatus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Retusotriletes |
Retusotriletes communis
|
USSR(Latvian SSR) |
Late Frasnian |
|
Retusotriletes |
Retusotriletes gibberosus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Retusotriletes |
Retusotriletes parvimammatus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Retusotriletes |
Retusotriletes simplex
|
USSR(Latvian SSR) |
Early Frasnian |
Middle Frasnian |
Retusotriletes |
Retusotriletes verruculatus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes argenteus
|
USSR(Latvian SSR) |
Early Frasnian |
Middle Frasnian |
Stenozonotriletes |
Stenozonotriletes calamites
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes conformis
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes definitus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes extensus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes extensus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes extensus
|
USSR(Latvian SSR) |
Late Frasnian |
|
Stenozonotriletes |
Stenozonotriletes formosus
|
USSR(Latvian SSR) |
Early Frasnian |
Middle Frasnian |
Stenozonotriletes |
Stenozonotriletes lasius
|
USSR(Latvian SSR) |
Early Frasnian |
Middle Frasnian |
Stenozonotriletes |
Stenozonotriletes manifestus
|
USSR(Latvian SSR) |
Middle Frasnian |
|
Stenozonotriletes |
Stenozonotriletes millegranus
sp. nov. |
USSR(Latvian SSR) |
Early Frasnian |
|