Veneroida

Veneroida
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Empty cockle shell, family Cardiidae

Empty cockle shell, family Cardiidae
Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Bivalvia
Subclass:Heterodonta
Order:Veneroida
Families


See text.


The Veneroida or veneroids are an order of bivalve molluscs. They include some familiar forms such as clams, cockles and zebra mussels. They are generally thick-valved, equal valved and isomyarian (that is, their adductor muscles are of equal size). The name means "perfected teeth", referring to the three teeth characteristic of the subclass Heterodonta to which this order belongs. Many species are active rather than sessile. However they tend to be filter feeders, feeding through paired siphons, with a characteristic folded gill structure adapted to that way of life.

Recent work in molecular systematics has suggested that this order is not monophyletic. If this conclusion is sustained, the order will presumably be broken up in due course.

Classification

  • Superfamily Veneroidea
  • Petricolidae
  • Veneridae
  • Superfamily Astartoidea
  • Astartidae
  • Superfamily Corbiculoidea
  • Corbiculidae
  • Sphaeriidae
  • Superfamily Tellinoidea
  • Donacidae
  • Psammobiidae
  • Semelidae
  • Tellinidae
  • Superfamily Arcticoidea
  • Arcticidae
  • Superfamily Cardioidea
  • Cardiidae
  • Tridacnidae
  • Superfamily Dreissenoidea
  • Dreissenidae
  • Superfamily Galeommatoidea
  • Galeommatidae
  • Lasaeidae
  • Kelliidae
  • Superfamily Glossoidea
  • Glossidae
  • Vesicomyidae
  • Superfamily Lucinoidea
  • Cyrenoididae
  • Fimbriidae
  • Lucinidae
  • Thyasiridae
  • Ungulinidae
  • Superfamily Mactroidea
  • Mactridae
  • Superfamily Solenoidea
  • Pharidae
  • Solenidae
  • Superfamily Carditoidea
  • Carditidae
  • Superfamily Gastrochaenoidea
  • Gastrochaenidae
  • Superfamily Cyamioidea
  • Sportellidae
  • Superfamily Chamoidea
  • Chamidae
  • Superfamily Crassatelloidea
  • Crassatellidae

External links

Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Mollusca
Linnaeus, 1758

Classes

Caudofoveata
Aplacophora
Polyplacophora
Monoplacophora
Bivalvia
Scaphopoda
Gastropoda
Cephalopoda
† Rostroconchia
† Helcionelloida
† ?Bellerophontida
The molluscs
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Bivalvia
Linnaeus, 1758

Subclasses

Anomalosdesmata
Cryptodonta
Heterodonta
Paleoheterodonta
Palaeotaxodonta
Pteriomorphia
and see text
Bivalves are mollusks belonging to the class Bivalvia.
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Heterodonta

Orders

†Cycloconchidae
†Hippuritoida
†Lyrodesmatidae
Myoida
†Redoniidae
Veneroida

Heterodonta
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family (Latin: familia, plural familiae) is a rank, or a taxon in that rank. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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order (Latin: ordo, plural ordines) is a rank between class and family (termed a taxon at that rank). The superorder is a rank between class and order. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Bivalvia
Linnaeus, 1758

Subclasses

Anomalosdesmata
Cryptodonta
Heterodonta
Paleoheterodonta
Palaeotaxodonta
Pteriomorphia
and see text
Bivalves are mollusks belonging to the class Bivalvia.
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clam is a kind of mollusc that has a shell divided into two pieces called valves, in other words, a clam is a bivalve mollusc.

The word "clam" has no real taxonomic significance in biology. However in the USA the word can sometimes be used to mean any bivalve mollusc.
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Cardiidae

Genera

Acanthocardia
Americardia
Cardium
Cerastoderma
Clinocardium
Corculum
Ctenocardia
Dinocardium
Discors
Fragum
Fulvia
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D. polymorpha

Binomial name
Dreissena polymorpha
Pallas, 1771

The Zebra mussel (Dreissena polymorpha) is a bivalve mussel native to freshwater lakes of southeast Russia.
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The term adductor muscle can have several meanings:
  • in a broad sense, any muscle that causes adduction can be titled an adductor muscle.
  • the term commonly refers to the adductor muscles of the hip.

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Heterodonta

Orders

†Cycloconchidae
†Hippuritoida
†Lyrodesmatidae
Myoida
†Redoniidae
Veneroida

Heterodonta
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Filter feeders (also known as suspension feeders) are animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized structure, such as the baleen of baleen whales.
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The term siphon is used for a number of biological structures, either because flowing liquids are involved or because the object is shaped like a siphon. In these structures, the physical phenomenon known as the siphon effect is not present.
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A gill is a respiration organ that functions for the extraction of oxygen from water and the excretion of carbon dioxide. Unlike many small aquatic animals, which can absorb oxygen through the entire surface of their bodies, more complex aquatic organisms have gills specially
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Molecular phylogeny is the use of the structure of molecules to gain information on an organism's evolutionary relationships. The result of a molecular phylogenetic analysis is expressed in a so-called phylogenetic tree.

Every living organism contains DNA, RNA, and proteins.
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In phylogenetics, a group is monophyletic (Greek: "of one race") if it consists of an inferred common ancestor and all its descendants. A taxonomic group that contains organisms but not their common ancestor is called polyphyletic, and a group that contains some but not all
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Veneridae
Rafinesque, 1815

Genera
See text.

The Veneridae or venerids, also known as Venus clams, are a large family of marine bivalve molluscs.
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Corbiculidae

Genera

See text.

The Corbiculidae are a family of bivalve molluscs (clams).

Clams in this family release many juveniles into the surrounding waters that have hatched inside the clams (ovoviviparous). Fertilization is internal.
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Sphaeriidae is a family of freshwater bivalves.

List of genera:
  • Sphaerium
  • Musculium
  • Pisidium

References

External links


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Psammobiidae
Fleming, 1828

Genera
See text.

Psammobiidae or sunset clams, are a family of medium-sized saltwater clams, marine bivalve molluscs of the order Veneroida.
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Tellinidae
Blainville, 1814

Genera
See text.

Tellinidae is a family of bivalve molluscs of the order Veneroida.

Genera

  • Arcopagia Leach in Brown, 1827
  • Cymatoica Dall, 1889
  • Leporimetis

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Cardiidae

Genera

Acanthocardia
Americardia
Cardium
Cerastoderma
Clinocardium
Corculum
Ctenocardia
Dinocardium
Discors
Fragum
Fulvia
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Dreissenidae

Genera

Dreissena
Mytilopsis
Congeria

The Dreissenidae are a family of small freshwater mussels, aquatic bivalve mollusks. They attach themselves to stones or to any other hard surface using a byssus.
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Mactridae
Lamarck, 1809

Genera
See text.

Mactridae, also known as trough shells or duck clams, is a family of marine bivalve clams of the order Veneroida.
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Solenidae

Genera
See text.
Solenidae is a family of clams including the genera Solen and Ensis.
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Carditidae
Lamarck, 1809

Genera
See text.

Carditidae is a family of marine bivalve clams of the order Veneroida.

Genera

  • Cardita Bruguière, 1792
  • Carditamera Conrad, 1838
  • Crassicardia

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