Arcoida
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Arcoida Fossil range: Lower Ordovician to Recent
Anadara from the Pliocene of Cyprus.
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Subclass: Pteriomorpha Order: Arcoida
Families
See text.

The Arcoida is an extant order of clams or bivalve molluscs. This order dates back to the lower Ordovician period.

Seven families are currently recognised within the order, including the well-known ark clams or ark shells in the family Arcidae.

Superfamilies and families in the order Arcoida

• Superfamily Arcoidea
  • Arcidae
  • Cucullaeidae
  • Noetiidae
  • Parallelodontidae
• Superfamily Limopsoidea
  • Glycymerididae
  • Limopsidae
  • Philobryidae

References

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