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Class: GASTROPODA
--- Taxon Tree: HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-CEPHALASPIDEA [Order]
------ Family: CEPHALASPIDA (unassigned) (Sea) (FOSSIL)
DB counters=39, Genus=34, Subgenus=0, Species=3, Subspecies=0, Synonyms=1, Images=1
DB counters include Fossil taxa: Species=3, Subspecies=0
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dumasi, Plicobulla dumasi Cossmann, 1895 † (FOSSIL)
harmeri, Pseudocassis harmeri Bell † (FOSSIL)
helveticus, Pseudocassis helveticus Pictet & Campiche, 1864 † - syn of: Zittelia helvetica (Pictet & Campiche, 1864) † (FOSSIL)
ovalis, Actaeonellina ovalis Peel † (FOSSIL)
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