Finally, after months of waiting and a little more getting used to drawing placoderms, I finished my new version of Dunkleosteus, one of the most iconic animals of the Devonian and the Paleozoic, referred to as one of the first megafauna predatory vertebrates 1/ Although its full length has been an enigma due to the lack of a full specimen, which made lot of researches to rely on calculation and comparison with other more complete placoderms with varied results ranging sizes from 4 to 8 and even 10 meters. 2/