Metapolygnathus is an extinct genus of platform conodonts.
^The Permian conodonts in chert of the Adoyama Formation, Ashio mountains, central Japan. S Hayashi, Earth Science, 1968
^The case of the Carnian (Triassic) conodont genus Metapolygnathus Hayashi. Ali Murat Kiliç , Pablo Plasencia, Keisuke Ishida and Francis Hirsch, Journal of Earth Science, April 2015, Volume 26, Issue 2, pages 219-223, doi:10.1007/s12583-015-0534-y
^A new Metapolygnathus platform conodont species and its implications for Upper Carnian global correlations. Michele Mazza, Manuel Rigo and Alda Nicora, Acta Palaeontologica Polonica, 56 (1), 2011, pages 121-131, doi:10.4202/app.2009.1104