Hadrosteus
Extinct genus of fishes From Wikipedia, the free encyclopedia
Hadrosteus is an extinct monospecific genus of large arthrodire placoderm from the Late Frasnian (Late Devonian) Kellwasserkalk facies of Bad Wildungen, Germany.[1] It had large, double-pronged inferognathals (lower jawbones), and serrated edges along its mandible, strongly suggesting that it was a fish-eating predator. The head had a triangular snout, and the trunkshield was short, but high, with a median dorsal plate that was broader than wide. The average skull length is about 16 centimeters.[1]
| Hadrosteus Temporal range: Late Devonian: Frasnian, | |
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| Artist's reconstruction | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Clade: | †Eubrachythoraci |
| Clade: | †Pachyosteomorphi |
| Clade: | †Aspinothoracidi |
| Genus: | †Hadrosteus Gross, 1932 |
| Species | |
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Etymology
The type species Hadrosteus rapax means "Rapacious Strong-Bone".[1]
Phylogeny
Summarize
Perspective
Hadrosteus is a member of the clade Aspinothoracidi, which belongs to the clade Pachyosteomorphi, one of the two major clades within Eubrachythoraci. The cladogram below shows the phylogeny of Hadrosteus:[2]
References
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