Misplaced Pages

Brachydeiroidea

Article snapshot taken from[REDACTED] with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

Brachydeiroidea
Temporal range: Middle to Late Frasnian
Restoration of B. grandis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Arthrodira
Suborder: Brachythoraci
Infraorder: Coccosteina
Superfamily: Brachydeiroidea
Denison, 1978
Type species
Brachydeirus carinatus
Gross, 1932
Families

Brachydeiroidea is a superfamily of small to moderately large-sized arthrodire placoderms from the Late Devonian of Europe and Eastern North America.

Brachydeiroids have, in cross section, a highly compressed body, a pointed, sometimes highly elongated snout, and tremendous orbits. The plates of the trunk shield are noticeably shortened: in Synauchenia, the trunk shield and head shield are fused together as a single, immovable unit. The superficial anatomy of brachydeiroids is extremely diverse.

Families

Brachydeiridae

A diverse family of variable forms, restricted to the middle to late Frasnian of Europe.

Leptosteidae

This family is represented by two species in the genus Leptosteus. Leptosteids differ from brachydeirids by having comparatively smaller orbits and more elongated trunk shields.

See also

References

  1. ^ Denison, Robert (1978). Handbook of Paleoichthyology, Volume 2, Placodermi. New York: Gustav Fischer Verlage. p. 73. ISBN 9780895740274.
  2. Denison, Robert (1978). Handbook of Paleoichthyology, Volume 2, Placodermi. New York: Gustav Fischer Verlage. p. 74. ISBN 9780895740274.
Arthrodira
Gnathostomata
Placodermi
Arthrodira
    • see below↓
Arthrodira
Arthrodira
Wuttagoonaspidae
Phyllolepida
Phyllolepididae
Actinolepidae
Phlyctaenioidei
Phlyctaeniidae
Arctolepididae
Groenlandaspididae
Williamsaspididae
Brachythoraci
Holonematidae
Homostiidae
Migmatocephala
Buchanosteidae
Eubrachythoraci
    • see below↓
Kudjanowiaspis

Ailuracantha dorsofelis Dicksonosteus arctirus Cartieraspis

Groenlandaspis riniensis
Eubrachythoraci
Coccosteomorphi
Coccosteoidea
Coccosteidae
Panxiosteidae
Incisoscutoidea
Camuropiscidae
Pachyosteomorphi
Dunkleosteoidea
Heterosteidae
Aspinothoracidi
Brachydeiridae
Selenosteidae
Coccosteus cuspidatus Dunkleosteus terrelli Titanichthys termieri
"Placodermi"
Gnathostomata
Placodermi
    • see below↓
Placodermi
Acanthothoraci*
Palaeacanthaspidae*
Weejasperaspididae
Palaeacanthaspis vasta
Petalichthyida
Quasipetalichthyidae
Macropetalichthyidae
Ptyctodontida
Rhenanida
Antiarchi
Arthrodira
Others
"maxillate placoderms"
  • Category
  • Taxon identifiers
    Brachydeiroidea


    Stub icon

    This article about a placoderm is a stub. You can help Misplaced Pages by expanding it.

    Categories:
    Brachydeiroidea Add topic