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Veneroida
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. Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 Bivalves are Molluscs belonging to the class Bivalvia. They have two-part shells and typically both valves are symmetrical along the hinge line Heterodonta is a Mollusc subclass in the class Bivalvia and contains the orders † Cycloconchidae, † Hippuritoida (rudists † Lyrodesmatidae In Biological classification, family ( Latin

The Veneroida or veneroids are an order of bivalve molluscs. This article is about the taxonomic rank for the sequence of species in a taxonomic list see Taxonomic order In scientific classification used Bivalves are Molluscs belonging to the class Bivalvia. They have two-part shells and typically both valves are symmetrical along the hinge line Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 They include some familiar forms such as clams, cockles and zebra mussels. Clam is a word which can be used for all some or only a few Species of Bivalve Mollusks the word is a Common name which has Cockle is the common name for edible Bivalve Mollusks of the family Cardiidae. The zebra mussel, Dreissena polymorpha, is a Species of small freshwater Mussel, an Aquatic Bivalve Mollusk. 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. Heterodonta is a Mollusc subclass in the class Bivalvia and contains the orders † Cycloconchidae, † Hippuritoida (rudists † Lyrodesmatidae 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. 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 The hyponome or siphon is the organ used by Cephalopods for locomotion A gill is an anatomical structure found in many aquatic organisms

Recent work in molecular systematics has suggested that this order is not monophyletic. A clade is a taxonomic group comprising a single Common ancestor and all the descendants of that ancestor If this conclusion is sustained, the order will presumably be broken up in due course.

Classification

External links

References


 This mollusc-related article is a stub. Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 You can help Wikipedia by expanding it.
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