Protriacanthus is an extinct genus of
Sources
* "New superfamily and three new families of tetraodontiform fishes from the Upper Cretaceous : the earliest and most morphologically primitive plectognaths (SuDoc SI 1.30:82)" by James C. Tyler
* [http://www.pbdb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=35608&is_real_user=0 The Paleobiology Database]
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