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Monotypic taxon: Order Trigonioida (mollusc)
 Entity: 

Types

Nominotypical taxon [ICZN]: Trigoniacea (Superfamily) Lamarck, 1819
Nominotypical taxon [ICZN]: Trigonioidea (Superfamily) Lamarck, 1819

Variants

Different rank: Trigonioidea (Superfamily) Lamarck, 1819
Current spelling: Trigoniida (Order) Dall, 1889 Ref: R. Bieler et al., 2010: 122. [inferred]
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Last updated: 28 Aug 2026