Heterosteidae (also known as Heterostiidae[1][2]) is an extinct family of moderately large to giant, flattened, benthic arthrodire placoderms with distinctive, flattened, triangular skulls that are extremely broad posteriorly, but become very narrow anteriorly.[3]
| Heterosteidae | |
|---|---|
 | |
| Comparison of genera | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Clade: | †Eubrachythoraci |
| Clade: | †Pachyosteomorphi |
| Superfamily: | †Dunkleosteoidea |
| Family: | †Heterosteidae Jaekel, 1903 |
| Genera | |
Heterosteidae belongs to the superfamily Dunkleosteoidea, a relative of the giant Dunkleosteus, as shown in the cladogram below:[1]
Genera
Herasmius Orvig, 1969
Heterosteus Asmuss, 1856
Yinostius J. Wang & N. Wang, 1984
References
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