Angarichthys
| Angarichthys Temporal range: Middle Devonian | |
|---|---|
 | |
| Artist's reconstruction | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Placodermi |
| Order: | Arthrodira |
| Family: | Homostiidae |
| Genus: | Angarichthys |
| Species: | A. hyperboreus |
| Binomial name | |
| Angarichthys hyperboreus Obruchev 1927 | |
Angarichthys hyperboreus is an extinct homostiid arthrodire placoderm from the Middle Devonian (either upper Eifelian or lower Givetian) of Siberia.[1] It is known from an infragnathal plate, an intero-lateral plate, and a marginal plate found from the Middle Devonian strata of the Tynep Series formation, near the Bakhta River. A. hyperboreus differs from Homosteus in that the former's marginal plate has a ridge where the central plate would have overlapped it,[1] and in the infragnathal, which is curved sigmoidally, and bears at least seven tooth-like prongs nearer to the functional anterior end (the plate, which is fragmentary, suggests that the intact plate would have born several more).[1]
The living animal would have been fairly large, as the head shield is estimated to be at least 40 centimeters long.[1]