Acanthotriletes |
Acanthotriletes dentatus
|
USSR(Latvian SSR) |
Frasnian |
|
Acanthotriletes |
Acanthotriletes denticulatus
|
USSR(Latvian SSR) |
Frasnian |
|
Acanthotriletes |
Acanthotriletes naumovae
|
USSR(Latvian SSR) |
Frasnian |
|
Acanthotriletes |
Acanthotriletes uncatus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeoperisaccus |
Archaeoperisaccus concinnus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeoperisaccus |
Archaeoperisaccus mirandus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeoperisaccus |
Archaeoperisaccus mirus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeoperisaccus |
Archaeoperisaccus ovalis
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes ancylius
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes antennarius
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes conspicuus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes crassus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes fidus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes hamulus
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes inaequalis
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeotriletes |
Archaeotriletes plavinensis
|
USSR(Latvian SSR) |
Frasnian |
|
Archaeozonotriletes |
Archaeozonotriletes angulosus
sp. nov. |
USSR(Latvian SSR) |
Frasnian |
|