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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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The type species Hadrosteus rapax means "Rapacious Strong-Bone".[1]
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]
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