| Tonnoidea | |
|---|---|
 | |
| A live but retracted individual of Cabestana spengleri , a species in the Ranellidae | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Tonnoidea Suter, 1913 (1825) |
| Families | |
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]
Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails, but also including some freshwater snails and land 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 is a taxonomic superfamily of very small to large predatory sea snails, marine gastropod mollusks.
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 thin, the shells are also strong and lack opercula. 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.
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.
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.
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.
Planaxidae, commonly called planaxids or clusterwinks, are a taxonomic family of small and minute sea snails, pantropical marine gastropod molluscs in the superfamily Cerithoidea. They live on rocky shores in the littoral zone of the tropics and subtropics.
Cerithiidae, common name the cerithiids or ceriths, is a large family of medium-sized marine gastropods in the clade Sorbeoconcha.
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 is a family of gastropods in the superfamily Seguenzioidea.
Olivoidea is a taxonomic superfamily of minute to medium-large predatory sea snails, marine gastropod mollusks in the order Neogastropoda.
The Personidae are a family of sea snails, marine gastropod molluscs in the order Littorinimorpha.
Austrotriton is a genus of medium-sized sea snails, a marine gastropod mollusc in the family Cymatiidae.
Gyrineum is a genus of predatory sea snails, marine gastropod mollusks in the family Cymatiidae.
The Skeneidae are a speciose family of minute to small marine gastropod molluscs in the superfamily Trochoidea.
Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.
Laminilabrum is a genus of sea snails, marine gastropod mollusks in the family Laubierinidae.
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