Acanthodiacrodium |
Acanthodiacrodium sp
|
USSR(Bashkir ASSR) |
Ordovician |
|
Acanthopsophosphaera |
Acanthopsophosphaera microaculeata
|
USSR(Pre-Urals) |
Late Ordovician |
Early Devonian |
Acanthopsophosphaera |
Acanthopsophosphaera sp
|
USSR(Bashkir ASSR) |
Early Devonian |
|
Acanthotriletes |
Acanthotriletes bucerus
|
USSR(Bashkir ASSR) |
Early Frasnian |
|
Acanthotriletes |
Acanthotriletes denticulatus
|
USSR(Urals) |
Early Devonian |
Eifelian |
Acanthotriletes |
Acanthotriletes denticulatus
|
USSR(Bashkir ASSR) |
Early Devonian |
|
Acanthotriletes |
Acanthotriletes heterodontus
|
USSR(Bashkir ASSR) |
Givetian |
|
Acanthotriletes |
Acanthotriletes ignotus
|
USSR(Bashkir ASSR) |
Late Frasnian |
Early Carboniferous |
Acanthotriletes |
Acanthotriletes impolitus
|
USSR(Bashkir ASSR) |
Givetian |
|
Acanthotriletes |
Acanthotriletes mutabilis
|
USSR(Bashkir ASSR) |
Late Eifelian |
|
Acanthotriletes |
Acanthotriletes parvispinosus
|
USSR(Urals) |
Early Devonian |
|
Acanthotriletes |
Acanthotriletes parvispinosus
|
USSR(Urals) |
Early Devonian |
Eifelian |
Acanthotriletes |
Acanthotriletes parvispinosus
|
USSR(Bashkir ASSR) |
Silurian |
Givetian |
Acanthotriletes |
Acanthotriletes parvispinosus
|
USSR(Bashkir ASSR) |
Early Devonian |
|
Acanthotriletes |
Acanthotriletes parvispinosus
|
USSR(Kazakh SSR) |
Givetian |
|
Acanthotriletes |
Acanthotriletes perpusillus
|
USSR(Bashkir ASSR) |
Silurian |
Late Eifelian |
Acanthotriletes |
Acanthotriletes pigmaeus
|
USSR(Bashkir ASSR) |
Early Devonian |
|