Triangulina |
Triangulina alargada
|
Canada(Ontario) |
Emsian |
Eifelian |
Triangulina |
Triangulina alargada
|
Spain |
Emsian |
|
Tunisphaeridium |
Tunisphaeridium tentaculaferum
|
Canada(Ontario) |
Siegenian |
Givetian |
Tyligmasoma |
Tyligmasoma
|
Spain |
Emsian |
|
Tyligmasoma |
Tyligmasoma alargada
|
Canada(Ontario) |
Emsian |
Eifelian |
Tyligmasoma |
Tyligmasoma alargada
|
Spain |
Emsian |
|
Tyligmasoma |
Tyligmasoma cylindrica
|
Algeria |
Ludlovian |
|
Tyligmasoma |
Tyligmasoma sanpetrensis
|
Spain |
Ludlovian |
Early Gedinnian |
Tylotopalla |
Tylotopalla reticulata
|
Argentina(San Juan) |
Wenlockian |
|
Veliferites |
Veliferites tenuimarginatus
|
Brazil(Maranhao) |
Early Devonian |
|
Veryhachium |
Veryhachium downiei
|
Canada(Ontario) |
Siegenian |
Givetian |
Veryhachium |
Veryhachium furcillatum
|
Canada(Ontario) |
Siegenian |
Eifelian |
Veryhachium |
Veryhachium lairdii
|
Canada(Ontario) |
Siegenian |
Givetian |
Veryhachium |
Veryhachium ledanoisii
|
Canada(Ontario) |
Emsian |
Givetian |
Veryhachium |
Veryhachium micropolygonale
|
Canada(Ontario) |
Emsian |
Eifelian |
Veryhachium |
Veryhachium octoaster
|
Canada(Ontario) |
Emsian |
Eifelian |
Veryhachium |
Veryhachium polyaster
|
Canada(Ontario) |
Siegenian |
Givetian |