SUnknownDunkleosteus | The Armored Mega CRONCH Fish from OHIO! (Update: he got nerfed) Fri, Sep 24, 2021 The oceans of the Devonian period were dominated by a great variety of placoderm, armored fish with bony jaws but most still lacking teeth. One of their species seems to be the ancestor of all terrestrial vertebrates alive today. 0 /10
