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formerly placed in the Order: CEPHALASPIDEA, in the Subclass:
OPISTHOBRANCHIA
Class: Gastropoda Cuvier, 1797
Subclass: Heterobranchia J.E. Gray, 1840
Clade: Euthyneura Spengel, 1881
Clade: Euopisthobranchia Jörger et al., 2010
Clade: Cephalaspidea P. Fischer, 1883
Superfamily: Bulloidea Lamarck, 1801
Family: Bullidae Lamarck, 1801
Bulla punctulata |
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Superfamiliy: Philinoidea J.E. Gray, 1850
Family: Aglajidae Pilsbry, 1895 (1847)
Navanax aenigmaticus |
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