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Taxonomy
Family:
THRACIIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Autobranchia (Subclass)
> Heteroconchia (Infraclass)
> Euhetrodonta (Subterclass)
> Anomalodesmata (Superorder)
> Thracioidea (Superfamily)
> Thraciidae (Family)
> Barythaerus (Genus)
> biconvexus (Species)
Synonymised Names:
=Myadora biconvexa Powell, 1927
Images: Barythaerus biconvexus (Powell, 1927)
Collected Jun 1955, off Poutama Island, South Cape, NZ (M.019878). © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Collected Jun 1955, off Poutama Island, South Cape, NZ (M.019878). © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Collected Jun 1955, off Poutama Island, South Cape, NZ (M.019878). © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Taxonomy
Family:
THRACIIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Autobranchia (Subclass)
> Heteroconchia (Infraclass)
> Euhetrodonta (Subterclass)
> Anomalodesmata (Superorder)
> Thracioidea (Superfamily)
> Thraciidae (Family)
> Barythaerus (Genus)
> biconvexus (Species)
Synonymised Names:
=Myadora biconvexa Powell, 1927
Details: Barythaerus biconvexus (Powell, 1927)
Size/Grows to:
Width 2.9mm, Height 2mm
Distribution:
Off Soutb West Otago from 180 metres
Geographical Range:
F
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Marshall, B.A. 2002 Some Recent Thraciidae, Periplomatidae, Myochamidae, Cuspidariidae and Spheniopsidae (Anomalodesmata) from the New Zealand region and referral of Thracia reinga Crozier, 1966 and Scintillona benthicola Dell, 1956 to Tellimya Brown, 1827 (Montacutidae) (Mollusca : Bivalvia), Molluscan Research, 22 (p.230)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.432)
  • Powell, A.W.B. 1927 Deep-water Mollusca from south-west Otago, with descriptions of 2 new genera and 22 new species., Records of the Canterbury Museum, 3 (p.123) Original Description

Key to Geographical Ranges
NZ Map showing Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approximation of the range of each species within New Zealand.
K=
Kermadec Islands
A=
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
C=
Cookian - Lower North Island and the northern part of the South Island
F=
Forsterian - Otago, Fiordland and Stewart Island
M=
Moriorian - Chatham Islands, Pitt Island
An=
Antipodean - Subantarctic Islands of New Zealand
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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