Acanthotriletes |
Acanthotriletes multisetus
|
Arctic Ocean |
Late Permian |
|
Acanthotriletes |
Acanthotriletes obtusosaetosus
|
Arctic Ocean |
Permian |
|
Acanthotriletes |
Acanthotriletes parvispinus
|
Arctic Ocean |
Late Permian |
|
Acanthotriletes |
Acanthotriletes rectispinus
|
Arctic Ocean |
Permian |
|
Acanthotriletes |
Acanthotriletes resistens
|
Arctic Ocean |
Early Carboniferous |
Middle Carboniferous |
Acanthotriletes |
Acanthotriletes resistens
|
Arctic Ocean |
Late Permian |
|
Acanthotriletes |
Acanthotriletes rigidispinosus
|
Arctic Ocean |
Permian |
|
Acanthotriletes |
Acanthotriletes sp
|
Arctic Ocean |
Late Permian |
Early Jurassic |
Acanthotriletes |
Acanthotriletes spinosellus
|
Arctic Ocean |
Late Permian |
|
Aletes |
Aletes sp
|
Arctic Ocean |
Early Triassic |
Late Triassic |
Azonaletes |
Azonaletes fabaginus
|
Arctic Ocean |
Late Permian |
|
Azonaletes |
Azonaletes levis
|
Arctic Ocean |
Late Permian |
|
Azonaletes |
Azonaletes microdictyus
|
Arctic Ocean |
Late Permian |
|
Azonaletes |
Azonaletes sp
|
Arctic Ocean |
Late Permian |
|
Azonaletes |
Azonaletes tenuis
|
Arctic Ocean |
Late Permian |
|
Calamitaceae |
Calamitaceae
|
Arctic Ocean |
Ladinian |
Early Jurassic |
Calamospora |
Calamospora microrugosa
|
Arctic Ocean |
Permian |
|