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Protetragonites
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Protetragonites Hyatt, 1900
Source
Rank
genus
Names
1
species:4627468
in Eastman-Zittel, Text-Book Palaeont. , 1, 569.
Classification
Lytoceratidae
Protetragonites Hyatt, 1900
Protetragonites crebrisulcatus
Protetragonites quadrisulcatus