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1-400: Protognathus (preoccupied by Protognathus Basilewsky 1950 , which is considered syn. of Pseudognathaphanus Schauberger, 1932 ) Protognathodus is an extinct conodont genus in the family Idiognathodontidae . This article about a conodont is a stub . You can help Misplaced Pages by expanding it . Pseudognathaphanus Too Many Requests If you report this error to