Diplacanthiformes (also known as Diplacanthida, Diplacanthoidei, or Diplacanthini) is an
order of
acanthodian
Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes), typically considered a paraphyletic group. They are currently considered to represent a grade of various fish lineages leading up to the extant Chondrichthyes, which ...
fishes which lived during the
Devonian Period
The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, wh ...
.
Subtaxa
* ''incertae sedis''
** Genus ''
Bryantonchus''
** Genus ''
Culmacanthus''
** Genus ''
Devononchus''
** Genus ''
Striacanthus''
** Genus ''
Tetanopsyrus
''Tetanopsyrus'' is a genus of Acanthodii. There are two species of this genus that lived through the lower Devonian (Lochkovian
The Lochkovian is one of three faunal stages in the Early Devonian Epoch. It lasted from 419.2 ± 3.2 million years ...
''
* Family
Diplacanthidae
''Diplacanthus'' is an extinct genus of Mid to Late Devonian fish in the class Acanthodii, known as spiny sharks.
Classification
The genus was named by Louis Agassiz in 1843. It was formerly regarded as belonging to the Climatiformes but ...
** Genus ''
Diplacanthus
''Diplacanthus'' is an extinct genus of Mid to Late Devonian fish in the class Acanthodii, known as spiny sharks.
Classification
The genus was named by Louis Agassiz in 1843. It was formerly regarded as belonging to the Climatiformes but r ...
''
** Genus ''
Milesacanthus''
** Genus ''
Ptychodictyon''
** Genus ''
Rhadinacanthus''
* Family
Gladiobranchidae?
** Genus ''
Gladiobranchus''
** Genus ''
Uraniacanthus''?
References
Acanthodii
Prehistoric fish orders
Devonian fish
Devonian first appearances
Devonian extinctions
{{Acanthodii-stub