. . . "Late Devonian: Frasnian,"@en . . "Q112325038"@en . . . "Q5638086"@en . . . . . . . "1092501982"^^ . . . "Hadrosteus"@en . . . "Hadrosteus is an extinct monospecific genus of large arthrodire placoderm from the Late Frasnian (Late Devonian) Kellwasserkalk facies of Bad Wildungen, Germany. 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."@en . . . . "Gross, 1932"@en . . . . . . . "4"^^ . . "* Hadrosteus rapax (Gross, 1932 )"@en . . "Artist's reconstruction"@en . . . . . . . . . . . . . . . . . . . "36560507"^^ . . . . . . . . "Hadrosteus"@en . . . . . "4026"^^ . . . "Hadrosteus is an extinct monospecific genus of large arthrodire placoderm from the Late Frasnian (Late Devonian) Kellwasserkalk facies of Bad Wildungen, Germany. 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."@en . . . . . . . .