Dentalium tiwhana
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| Dentalium tiwhana | ||||||||||||||
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| Dentalium tiwhana Dell, 1953 |
Dentalium tiwhana is a tusk shell of the family Dentaliidae, endemic to New Zealand waters. It is found on the Chatham Rise at depths of between 230 and 360 m, the Chatham Islands at depths of between 130 and 330 m, off eastern Otago at depths of between 260 and 350 m, and in the south Tasman Sea at depths of about 610 m.
The shell is long, slender and very gradually tapered, arcuate and variably gently spirally twisted. Sculpture consists of six longitudinal ribs, which are irregularly spirally twisted also, and interrupted by slight constrictions.
Length is up to 41 mm, and width at the anterior aperture up to 1.5 mm.
[edit] References
- Powell A W B, New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
