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Key to 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 approxomation 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
E =
Endemic
I =
Introduced

Taxonomic Classes > Thumbnail Index:

Monoplacophora

Monoplacophora

A group of small, deep-water, limpet-like molluscs. All species show a variable number of serially repeated gills and eight sets of dorsoventral pedal retractor muscles.

Polyplacophora

Polyplacophora

Chitons. Limpet shaped animals which attach themselves to solid surfaces. The shell is divided into 8 small plaits or valves, running along the back of the animal, which are embedded in the mantle and surrounding girdle.

Gastropoda

Gastropoda

The largest and most highly varied class of molluscs. Most with a single shell, usually coiled in a right-hand spiral. Some species have a simple cap-shaped shell, some only an internal remnant, or in some (slugs and nudibranchs), the shell is absent.

Scaphopoda

Scaphopoda

Tusk Shells have a tapered tube-like shell, open at each end. At the wide end is the plug-like foot of the animal, and the head from which extend bunches of slender tentacles. The animal burrown in sand or mud, and feeds on foraminifers, the larvae of other shellfish and micro-organisms.

Bivalvia

Bivalvia

Shells consisting of two valves, hinged by an elastic ligament and held closed by a pair of adductor muscles. Usually bilaterally symetrical, except in a few families in which one valve may become cemented to a solid surface.

Cephalopoda

Cephalopoda

This class includes the extinct Ammonites and Belemnites, the living Cuttlefish, Octopus, Squids and Argonauts. Most are soft bodied, but some have an external shell (Nautilus, Argonauta), or internal shell (Spirula).