Metopacanthus is an extinct genus of holocephalan cartilaginous fish from the Early Jurassic epoch in Europe. It is known from the Toarcian of the Posidonia Shale of Germany. It has an unusual jaw-like structure over the skull.E. Fraas. 1910. Chimäridenreste aus dem oberen Lias von Holzmaden. Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg 66:55-63 It had long fin spine with length of .
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