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Taxonomy
Family:
ANABATHRIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Truncatelloidea (Superfamily)
> Anabathridae (Family)
> Amphithalamus (Genus)
> semen (Species)
Genus Synonyms:
=Amphitalamus Carpenter, 1864 (misspelling)
=Amphithalamus (Amphithalamus) Carpenter, 1864
=Amphithalamus (Notoscrobs) Powell, 1927
=Amphithalimus Carpenter, 1864 (misspelling)
=Amphithalmus Carpenter, 1864 (misspelling)
=Microfossa Laseron, 1950
=Notoscrobs Powell, 1927
=Notoscrobs (Microfossa) Laseron, 1950
=Obescrobs Iredale, 1955
=Rissoa (Amphithalamus) Carpenter, 1864
Synonymised Names:
=Amphithalamus (Amphithalamus) semen (Odhner, 1924) accepted, alternate representation
=Notoscrobs (Microfossa) semen (Odhner, 1924)
=Rissoa semen Odhner, 1924
Images: Amphithalamus semen (Odhner, 1924)
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Taxonomy
Family:
ANABATHRIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Truncatelloidea (Superfamily)
> Anabathridae (Family)
> Amphithalamus (Genus)
> semen (Species)
Genus Synonyms:
=Amphitalamus Carpenter, 1864 (misspelling)
=Amphithalamus (Amphithalamus) Carpenter, 1864
=Amphithalamus (Notoscrobs) Powell, 1927
=Amphithalimus Carpenter, 1864 (misspelling)
=Amphithalmus Carpenter, 1864 (misspelling)
=Microfossa Laseron, 1950
=Notoscrobs Powell, 1927
=Notoscrobs (Microfossa) Laseron, 1950
=Obescrobs Iredale, 1955
=Rissoa (Amphithalamus) Carpenter, 1864
Synonymised Names:
=Amphithalamus (Amphithalamus) semen (Odhner, 1924) accepted, alternate representation
=Notoscrobs (Microfossa) semen (Odhner, 1924)
=Rissoa semen Odhner, 1924
Details: Amphithalamus semen (Odhner, 1924)
Size/Grows to:
Height 1.5mm, Width 1.7mm
Distribution:
Northland to Banks Peninsula, on coralline algae
Geographical Range:
ACM
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.104)
  • Odhner, N.H. 1924 Papers from Dr. Th. Mortensen's Pacific Expedition 1914–1916. XIX. New Zealand Mollusca, Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i Kjobenhavn, 77 (p.22) Original Description

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

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