Mathildoidea
Encyclopedia
Mathildoidea is a superfamily
Taxonomic rank
In biological classification, rank is the level in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, and class. Each rank subsumes under it a number of less general categories...

 of sea snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s, marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusks in the informal group Lower Heterobranchia
Lower Heterobranchia
Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly-evolved sea slugs and sea snails, within the clade Heterobranchia...

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Families

Families within the superfamily Mathildoidea include:
  • Family Mathildidae
    Mathildidae
    Mathildidae is a family of minute sea snails, marine gastropod molluscs in the informal group of the Lower Heterobranchia.-Genera:Genera within the family Mathildidae include:* Gegania Jeffreys, 1884* Mathilda Semper, 1865...

  • † Family Ampezzanildidae
    Ampezzanildidae
    The Ampezzanildidae is an extinct taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.- References :*...

  • † Family Anoptychiidae
    Anoptychiidae
    †Anoptychiidae is an extinct taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.- References :*...

  • † Family Gordenellidae
    Gordenellidae
    Gordenellidae is an extinct taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.-Genera:Genera within the family Gordenellidae include: * Gordenella, the type genus* Turritelloidea- References :...

  • † Family Tofanellidae
    Tofanellidae
    The Tofanellidae is an extinct taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.- Subfamilies :...

  • † Family Trachoecidae
    Trachoecidae
    The Trachoecidae is an extinct taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.- References :*...

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