Last updated

Cabestana spengleri.jpg
A live but retracted individual of Cabestana spengleri , a species in the Ranellidae
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Tonnoidea
Suter, 1913 (1825)

See text

Synonyms [1]

Cassoidea (junior synonym)

The Tonnoidea are a superfamily of sea snails, marine gastropod molluscs in the order Littorinimorpha. [1] [2] This superfamily includes many very large species.



Beu (1998, 2008) favours usage of Tonnoidea and Tonnidae rather than Cassoidea and Cassidae preferred by Riedel (1995). This is in agreement with the action of Thiele (1925) who placed Tonnidae and Cassidae under "stirps Tonnacea", therefore acting as first reviser under ICZN art. 24


Families within the superfamily Tonnoidea include: [1]

Families brought into synonymy

See also

Commons-logo.svg Media related to Tonnoidea at Wikimedia Commons

Related Research Articles

Littorinimorpha Order of gastropods

Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails, but also including some freshwater snails and land snails.

Terebridae Family of sea snails

The Terebridae, commonly referred to as auger shells or auger snails, is a group or family of small to large predatory marine gastropods in the superfamily Conoidea.

Buccinoidea Superfamily of molluscs

Buccinoidea is a taxonomic superfamily of very small to large predatory sea snails, marine gastropod mollusks.

Turbinidae Family of gastropods

Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.

Tonnidae Family of gastropods

The Tonnidae are a family of medium-sized to very large sea snails, known as the tun shells. These are marine gastropod molluscs in the clade Littorinimorpha. The name "tun" refers to the snails' shell shape which resembles wine casks known as "tuns". While the shells are thin, they are also strong. There is no operculum. They are found in all tropical seas, where they inhabit sandy areas. During the day, they bury themselves in the substrate, emerging at night to feed on echinoderms, crustaceans, and bivalves. Some larger species also capture fish, using their expandable probosces to swallow them whole. Females lay rows of eggs that become free-swimming larvae for several months before settling to the bottom.

Cassidae Family of gastropods

The Cassidae are a taxonomic family of medium-sized, large, and sometimes very large sea snails commonly called helmet snails or bonnet snails. These are marine gastropod mollusks in the superfamily Tonnoidea and the clade Littorinimorpha.

Calliostomatidae Family of gastropods

Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.

Ranellidae Family of gastropods

The Ranellidae, common name the triton shells or tritons, are a taxonomic family of small to very large predatory sea snails, marine gastropod mollusks in the order Littorinimorpha.

<i>Cellana</i> Genus of molluscs

Cellana is a genus of sea snails or limpets, marine gastropod molluscs in the family Nacellidae, the true limpets.

Bursidae Family of gastropods

The Bursidae, common name "frog snails" or "frog shells", are a rather small taxonomic family of large sea snails, marine gastropod predatory snails in the clade Littorinimorpha.


Cerithiidae, common name the cerithiids or ceriths, is a large family of medium-sized marine gastropods in the clade Sorbeoconcha.

Cancellariidae Family of sea snails

Cancellariidae, common name the nutmeg snails or nutmeg shells, are a family of small to medium-large sea snails, marine gastropod mollusks in the clade Neogastropoda. Some of the shells of the species in this family resemble a nutmeg seed.

Cymatiidae is a family of large sea snails in the superfamily Tonnoidea and the order Littorinimorpha. Members of this family are predators.


The Neotaenioglossa is a taxonomic name for a large group of mostly sea snails. The name was originally created by Haller in 1882. Ponder and Warén (1988), and Marquet (1997), assigned this name to the superorder Caenogastropoda. ITIS considers the order Neotaenioglossa to be a synonym of Cerithioidea Férussac, 1819 .

Eucyclidae Family of gastropods

Eucyclidae is a family of gastropods in the superfamily Seguenzioidea.

The taxonomy of the Gastropoda, as revised by Winston Ponder and David R. Lindberg in 1997, is an older taxonomy of the class Gastropoda, the class of molluscs consisting of all snails and slugs. The full name of the work in which this taxonomy was published is Towards a phylogeny of gastropod molluscs: an analysis using morphological characters.

<i>Gyrineum</i> Genus of gastropods

Gyrineum is a genus of predatory sea snails, marine gastropod mollusks in the family Cymatiidae.

<i>Eudolium</i> Genus of gastropods

Eudolium is a genus of large sea snails, marine gastropod mollusks in the family Tonnidae, the tun shells.

Emarginulinae Subfamily of limpet-like sea snails

The subfamily Emarginulinae, common name keyhole limpets and slit limpets, is a taxonomic subfamily of limpet-like sea snails, marine gastropod molluscs in the family Fissurellidae, the keyhole limpets and slit limpets.

Borsoniidae Family of sea snails

Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.


  1. 1 2 3 Tonnoidea Suter, 1913 (1825) . Retrieved through: World Register of Marine Species  on 4 December 2018.
  2. Bouchet, P. & Rocroi, J.-P. (2005). "Classification and Nomenclator of Gastropod Families". Malacologia. 47 (1–2).