Architectibranchia is a clade

Clade

A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...

 of marine 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, gastropod mollusks.

It has been originally established containing the superfamilies Acteonoidea

Acteonoidea

Acteonoidea is a superfamily of sea snails, or bubble snails, marine gastropod mollusks.- Taxonomy :In the taxonomy of Bouchet & Rocroi , the superfamily Acteonoidea has been included into the informal group "Lower Heterobranchia" , also known as the Allogastropoda.Only one of analyses by Jörger...

, Ringiculoidea, and Diaphanoidea

Diaphanoidea

Diaphanoidea is a taxonomic superfamily of small sea snails, marine opisthobranch gastropod mollusks or micromollusks in the Cephalaspidea, the headshield slugs and bubble snails....

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2005 taxonomy

Architectibranchia has not been used in the taxonomy by Bouchet & Rocroi (2005)

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

 and this taxon name has been listed as an available name

Available name

In zoology, an available name is a scientific name for a taxon of animals that has been published conforming to all the mandatory provisions of the ICZN Code for the establishment of a zoological name....

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2009 taxonomy

Clade Architectibranchia has been reinstated by Malaquias et al. in 2009 and they have limited the taxon to Acteonoidea and Ringiculoidea.

There are five families within the clade Architectibranchia and they include:

• Acteonidae
  Acteonidae
  Acteonidae, common name the "barrel bubble snails", is a family of small sea snails, marine gastropod mollusks of the informal group Lower Heterobranchia.-Shell description:The shell is usually smaller than 25 mm...
  
  
• Aplustridae
• Bullinidae
  Bullinidae
  Bullinidae is a taxonomic family of small sea snails or bubble snails, marine gastropod mollusks in the superfamily Acteonoidea.Synonyms for this family are Nonacteoninidae Bandel, 1994 and Sulcoactaeonidae Gründel, 1997....
  
  
• Ringiculidae
  Ringiculidae
  Ringiculidae are a family of minute deep water sea snails or micromolluscs, marine gastropod mollusks or micromollusks in the informal group Lower Heterobranchia.Ringiculidae is the only family within the superfamily Ringiculoidea....
  
  
• Notodiaphanidae
  Notodiaphanidae
  Notodiaphana fragilis is a species of marine snail, gastropod mollusk in the clade Architectibranchia.Notodiaphana fragilis is the only species in the genus Notodiaphana...
  
  

2010 taxonomy

Taxon Architectibranchia is not expicitely mentioned in the molecular analysis by Jörger et al. (2010). Some of its members has been included: Acteonoidea have been moved to 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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