This similarity lead Denison ( 1978 ) to plate and the pineal plate, which " Enseosteus " does not.
2.
R�cklin ( 2011 ) agrees with Denison's synonymizing of " Ottonosteus ", but rejects Denison's synonymization of " Walterosteus ", claiming how " Walterosteus " has a contact between the rostral plate and the pineal plate, which " Enseosteus " does not.
3.
""'Pachyosteus bulla " "'is a medium-sized selenosteid arthrodire placoderm known from the Upper Frasnian Kellwasserkalk facies of Late Devonian Bad Wildungen, Germany and from the Famennian portions of the Holy Cross Mountains of Poland . " P . bulla " has a broad skull about 7 to 10 centimeters long, a comparatively long median dorsal plate, and a short rostral plate that meets the pineal plate.
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