Coccosteidae is a family of arthrodire placoderms from the Early to Late Devonian. Fossils appear in various strata in Europe, North America and China.
| Coccosteidae | |
|---|---|
| |
| 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 | |
Phylogeny edit
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:[1]
Genera edit
Belgiosteus edit
A genus of very large coccosteids. Species are found in Middle Devonian Belgium and China.
Clarkosteus edit
Coccosteus edit
The type genus of the family. Numerous species are found in Middle to Upper Devonian strata throughout Europe and parts of North America.
Dickosteus edit
Jiuchengia edit
The earliest known coccosteid from Late Emsian Yunnan province, China. It is distinguished from other coccosteids by having an elongated occipital.
Livosteus edit
A genus of very large coccosteids known from Middle to Late Devonian strata of Eastern Europe.
Millerosteus edit
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.
Protitanichthys edit
Watsonosteus edit
Woodwardosteus edit
References edit
- ^ Zhu, You-An; Zhu, Min; Wang, Jun-Qing (1 April 2016). "Redescription of Yinostius major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the interrelationships of Brachythoraci". Zoological Journal of the Linnean Society. 176 (4): 806–834. doi:10.1111/zoj.12356. ISSN 0024-4082.