Architectonicidae

thumb|left|Drawing of the animal in Architectonida thumb|225px|

Architectonicidae, common name the staircase shells or sundials, are a family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia (= Allogastropoda) of the clade Heterobranchia.

Heliacus is a genus of gastropods belonging to the family Architectonicidae.

Solatisonax is a genus of sea snails, marine gastropod mollusks in the family Architectonicidae, the staircase shells or sundials.

Granosolarium is a genus of snail. It was named by Federico Sacco in 1892.

Pseudotorinia is a genus of sea snails, marine gastropod molluscs in the family Architectonicidae, the staircase shells or sundials.

Spirolaxis is a genus of sea snails, marine gastropod mollusks in the family Architectonicidae, the staircase shells or sundials.

Adelphotectonica is a genus of sea snails in the family Architectonicidae.

species of gastropod