Carinariidae

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Carinariidae
Bonite-mollusques-pl22.jpg
Some examples of Carinariidae from "Atlas Zoologique du Voyage de la corvette La Bonite (1845-1852)"
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily: Pterotracheoidea
Family: Carinariidae
Blainville, 1818
Genera

See text

Carinariidae, known by the common name "heteropods" like their relatives in the Pterotracheoidea, is a taxonomic family of swimming or floating sea snails, pelagic marine gastropod molluscs in the clade Littorinimorpha.

Distribution[edit]

The snails of this family occur worldwide in the pelagic zone of tropical to subtropical seas. floating or swimming by moving up and down the fin-shaped front part of their foot.

Feeding habits[edit]

They feed on jellyfish, larvae of other snails and on zooplankton.

Anatomy[edit]

The cylindrical body of these snails can be divided in three regions: the proboscis, the trunk and the tail region. The body is elongated and much longer than the reduced shell. But in Pterosoma the trunk is wider and is somewhat disc-shaped. The taenioglossan radula has seven teeth in each row: one central tooth, flanked on each side by one lateral and two marginal teeth. The central tooth has three central cusps and on each side a large process backing away from the center. The lateral teeth terminate in a sharp point.

The protoconch in the adult shell of Carinaria and Pterosoma is located at the apex.

Taxonomy[edit]

The following two subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005):

  • Carinariinae Blainville, 1818 - synonym: Pterosomatidae, Rang, 1829
  • † Brunoniinae Dieni, 1990

Genera[edit]

Genera within the family Carinariidae include:

Carinariinae

† Brunoniinae

  • Brunonia G. Müller, 1898 - type genus of the subfamily Brunoniinae

References[edit]

External links[edit]