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Taxonomy
Family:
PYRAMIDELLIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> 'Lower Heterobranchia' (Infraclass)
> Pyramidelloidea (Superfamily)
> Pyramidellidae (Family)
> Besla (Genus)
> rossiana (Species)
Genus Synonyms:
=Odostomia (Besla) Dall & Bartsch, 1904
Images: Besla rossiana Laws, 1941
Holotype, collected in 174 metres, off Auckland Islands, NZ (MA70940). © Auckland Museum (CC-BY)
Taxonomy
Family:
PYRAMIDELLIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> 'Lower Heterobranchia' (Infraclass)
> Pyramidelloidea (Superfamily)
> Pyramidellidae (Family)
> Besla (Genus)
> rossiana (Species)
Genus Synonyms:
=Odostomia (Besla) Dall & Bartsch, 1904
Details: Besla rossiana Laws, 1941
Size/Grows to:
Height 2.2mm, Width 1mm
Distribution:
Off Auckland and Snares Islands
Geographical Range:
An
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.266)
  • Laws, C.R. 1941 Review of the Tertiary and Recent Neozelanic Pyramidellid Mollusca. No. 8 - The Pyrgulinind Genera and the genus Evalea, Transactions and Proceedings of the Royal Society of New Zealand, 71 (p.13) 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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