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Class: CEPHALOPODA
--- Taxon Tree: NAUTILOIDEA [Subclass]-ELLESMEROCERIDA [Order]
------ Family: PHTHANONCOCERATIDAE Evans & King, 1990 † (Sea) (FOSSIL)
DB counters=7, Genus=3, Subgenus=0, Species=3, Subspecies=0, Synonyms=0, Images=0
DB counters include Fossil taxa: Species=3, Subspecies=0
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