Myoida
Encyclopedia
Myoida is an order
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

 of bivalve molluscs. They are burrowing molluscs, with well-developed siphons. The shell is relatively soft, and lacks a nacre
Nacre
Nacre , also known as mother of pearl, is an organic-inorganic composite material produced by some mollusks as an inner shell layer; it is also what makes up pearls. It is very strong, resilient, and iridescent....

ous layer. Some species have a single cardinal tooth.

The order includes such molluscs as soft-shell clam
Soft-shell clam
Soft-shell clams, scientific name Mya arenaria, popularly called "steamers", "softshells", "longnecks", "piss clams", "Ipswich clams", or "Essex clams" are a species of edible saltwater clam, a marine bivalve mollusk in the family Myidae....

s, geoduck
Geoduck
The geoduck , Panopea generosa, is a species of very large saltwater clam, a marine bivalve mollusk in the family Hiatellidae.The shell of this clam is large, about to over in length, but the very long siphons make the clam itself very much longer than this: the "neck" or siphons alone can be ...

s, and shipworm
Shipworm
Shipworms are not worms at all, but rather a group of unusual saltwater clams with very small shells, notorious for boring into wooden structures that are immersed in sea water, such as piers, docks and wooden ships...

s.

Classification

  • Superfamily Anomalodesmacea
  • Superfamily Gastrochaenoidea
    Gastrochaenidae
    Gastrochaenidae is a family of bivalve molluscs in the order Myoida.-Genera:* Gastrochaena Spengler, 1783* Spengleria Tryon, 1861-References:...

    • Gastrochaenidae
      Gastrochaenidae
      Gastrochaenidae is a family of bivalve molluscs in the order Myoida.-Genera:* Gastrochaena Spengler, 1783* Spengleria Tryon, 1861-References:...

  • Superfamily Hiatelloidea
    Hiatellidae
    Hiatellidae is a family of bivalve molluscs in the order Myoida. It contains five genera.-Genera:* Cyrtodaria Reuss, 1801 * Hiatella Bosc, 1801** Hiatella arctica * Panomya Gray, 1857 * Panopea Menard, 1807...

    • Hiatellidae
      Hiatellidae
      Hiatellidae is a family of bivalve molluscs in the order Myoida. It contains five genera.-Genera:* Cyrtodaria Reuss, 1801 * Hiatella Bosc, 1801** Hiatella arctica * Panomya Gray, 1857 * Panopea Menard, 1807...

  • Superfamily Myoidea
    • Myidae
      Myidae
      Myidae is a family of bivalve molluscs in the order Myoida.-Genera:* Cryptomya ** Cryptomya californica - California softshell* Mya Linnaeus, 1758...

    • Corbulidae
      Corbulidae
      Corbulidae is a family of bivalve molluscs in the order Myoida.-Genera and species in the family Corbulidae:* Caryocorbula Bruguiere, 1792** Caryocorbula porcella * Corbula Bruguiere, 1797** Corbula alabamiensis Lea, 1833...

  • Superfamily Pholadoidea
    • Pholadidae
    • Teredinidae

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK