Structure, Growth and Histology of Gnathal Elements in <i>Dunkleosteus</i> (Arthrodira, Placodermi), with a Description of a New Species from the Famennian (Upper Devonian) of the... oleh Oleg A. Lebedev, Russell K. Engelman, Pavel P. Skutschas, Zerina Johanson, Moya M. Smith, Veniamin V. Kolchanov, Kate Trinajstic, Valeriy V. Linkevich