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Taxonomy
Family: Subfamily:
MACTRIDAE: MACTRINAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Autobranchia (Subclass)
> Heteroconchia (Infraclass)
> Euhetrodonta (Subterclass)
> Imparidentia (Superorder)
> Venerida (Order)
> Mactroidea (Superfamily)
> Mactridae (Family)
> Mactrinae (Subfamily)
> Mactra (Genus)
> ordinaria (Species)
Genus Synonyms:
=Mactra (Maorimactra) Finlay, 1928 accepted, alternate representation
Synonymised Names:
=Mactra (Maorimactra) ordinaria E. A. Smith, 1898 accepted, alternate representation
=Mactra elegans Hutton, 1873
=Mactra triangulare Hector, 1870
Images: Mactra ordinaria E. A. Smith, 1898
In beach drift, Tokerau Beach, Northland, NZ. 14mm. © rights reserved
In beach drift, Tokerau Beach, Northland, NZ. 14mm. © rights reserved
Taxonomy
Family: Subfamily:
MACTRIDAE: MACTRINAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Autobranchia (Subclass)
> Heteroconchia (Infraclass)
> Euhetrodonta (Subterclass)
> Imparidentia (Superorder)
> Venerida (Order)
> Mactroidea (Superfamily)
> Mactridae (Family)
> Mactrinae (Subfamily)
> Mactra (Genus)
> ordinaria (Species)
Genus Synonyms:
=Mactra (Maorimactra) Finlay, 1928 accepted, alternate representation
Synonymised Names:
=Mactra (Maorimactra) ordinaria E. A. Smith, 1898 accepted, alternate representation
=Mactra elegans Hutton, 1873
=Mactra triangulare Hector, 1870
Details: Mactra ordinaria E. A. Smith, 1898
Size/Grows to:
Width 19mm, Height 12mm
Distribution:
North Island and South Island as far south as Dunedin. In mud in shallow water, from 0-311m
Notes:
Marine, Native - Endemic
Description:
Sculpture of very fine and dense concentric lirations, slightly stronger at the sides. Distinguished from juvenile discors by the lack of a posterior ridge

Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.414)

*98 © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)

NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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