Biology:Coccosteidae

Short description: Extinct family of fishes

Coccosteidae Temporal range: Late Emsian-Late Devonian, 393.3–358.9 Ma PreЄ Є O S D C P T J K Pg N
Artist's reconstruction of Coccosteus cuspidatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Placodermi
Order:	†Arthrodira
Suborder:	†Brachythoraci
Clade:	†Eubrachythoraci
Clade:	†Coccosteomorphi
Superfamily:	†Coccosteoidea
Family:	†Coccosteidae Traquir, 1888
Genera
Belgiosteus Clarkosteus Coccosteus Dickosteus Jiuchengia Livosteus Millerosteus Protitanichthys Trachosteus Watsonosteus Woodwardosteus

Coccosteidae is a family of arthrodire placoderms from the Early to Late Devonian. Fossils appear in various strata in Europe, North America and China.

Phylogeny

Coccosteidae belongs to the larger clade Coccosteomorphi, which together with its sister clade Pachyosteomorphi forms the group Eubrachythoraci. The phylogeny of Coccosteidae can be shown in the cladogram below:

Eubrachythoraci

Coccosteomorphi Coccosteoidea Coccosteidae     Millerosteus minor     Coccosteus cuspidatus         Dickosteus threiplandi     Watsonosteus fletti     Protitanichthys rockportensis       Panxiosteidae   Plourdosteus canadensis     Panxiosteus ocullus     Janiosteus timanicus       Incisoscutoidea   Harrytoombsia elegans       Torosteus tuberculatus     Torosteus pulchellus         Mcnamaraspis kaprios       Compagopiscis croucheri     Trematosteus fontanellus   Camuropiscidae     Incisoscutum ritchiei     Incisoscutum sarahae         Rolfosteus canningensis       Tubonasus lennardensis       Fallacosteus turneri       Camuropiscis laidlawi     Latocamurus coulthardi                     Pachyosteomorphi   Rhachiosteus pterygiatus     Dunkleosteoidea   Eastmanosteus calliaspis         Eastmanosteus pustulosus     Kiangyousteus yohii         Golshanichthys asiatica       Westralichthys uwagedensis         Dunkleosteus raveri     Dunkleosteus terrelli         Dunkleosteus amblyodoratus   Heterostiidae   Heterosteus ingens     Yinosteus major                 Aspinothoracidi   Tapinosteus heintzi         Bullerichthys fascidens       Kendrickichthys cavernosus     Bruntonichthys multidens           Dinichthys herzeri       Hadrosteus rapax       Gorgonichthys clarki   Selenosteidae   Heintzichthys gouldii     Pachyosteus bulla     Gymnotrachelus hydei     Stenosteus angustopectus     Brachyosteus dietrichi       Melanosteus occitanus     Rhinosteus parvulus

Genera

Belgiosteus

A genus of very large coccosteids. Species are found in Middle Devonian Belgium and China .

Coccosteus

The type genus of the family. Numerous species are found in Middle to Upper Devonian strata throughout Europe and parts of North America.

Jiuchengia

The earliest known coccosteid from Late Emsian Yunnan province, China. It is distinguished from other coccosteids by having an elongated occipital.

Livosteus

A genus of very large coccosteids known from Middle to Late Devonian strata of Eastern Europe.

Millerosteus

A genus of very small coccosteids known from Middle to Late Devonian strata throughout Europe. Some species are found in the same strata with certain species of Coccosteus.

References

Wikidata ☰ Q16980853 entry