Protitanichthys

Protitanichthys; Temporal range: Middle Devonian: Eifelian - Lower Givetian, 393.3–382.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Head shield, Ohio Geological Survey
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Placodermi
Order:	†Arthrodira
Suborder:	†Brachythoraci
Family:	†Coccosteidae
Genus:	†Protitanichthys; Eastman, 1907
Species
	Protitanichthys fossatus Eastman, 1907 (type); Protitanichthys rockportensis Case, 1931;
Synonyms
	Dinichthys ohioensis Skeels, 1962;

Protitanichthys is an extinct genus of comparatively large coccosteid arthrodire placoderms from the Middle Devonian of the eastern United States. Fossils are found primarily in the Eifelian-epoch aged Delaware Limestone of Ohio, and the Lower Givetian-aged Rockport Quarry Limestone of Michigan^[1]

^ Denison, Robert (1978). Placodermi Volume 2 of Handbook of Paleoichthyology. Stuttgart New York: Gustav Fischer Verlag. p. 81. ISBN 978-0-89574-027-4.