Hadrosteus

Hadrosteus; Temporal range: Late Frasnian
	Artist's reconstruction
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Class:	Placodermi
Order:	Arthrodira
Suborder:	Brachythoraci
Infraorder:	Coccosteina
Superfamily:	Dinichthyloidea
Family:	Hadrosteidae; Gross, 1932
Genus:	Hadrosteus
Species:	H. rapax
Binomial name
	Hadrosteus rapax; Gross, 1932

Hadrosteus rapax ("Rapacious Strong-Bone") is a large arthrodire placoderm from the Late Frasnian Kellwasserkalk facies of Germany.^[1] It had large, double-pronged inferognathals, 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.

References

'^ Denison, Robert (1978). Placodermi Volume 2 of Handbook of Paleoichthyology. Stuttgart New York: Gustav Fischer Verlag. pp. 89–90. ISBN 978-0-89574-027-4.

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[Denison-1] '^ Denison, Robert (1978). Placodermi Volume 2 of Handbook of Paleoichthyology. Stuttgart New York: Gustav Fischer Verlag. pp. 89–90. ISBN 978-0-89574-027-4.

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