Thoristella chathamensis profunda

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Thoristella chathamensis profunda
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Prosobranchia Order: Archaeogastropoda Superfamily: Trochacea Family: Trochidae Genus: Thoristella Species: T. chathamensis Subspecies: T. chathamensis profunda
Trinomial name
Thoristella chathamensis profunda Dell, 1956

Thoristella chathamensis profunda is a subspecies of minute, very deepwater sea snail, a marine gastropod mollusc, or micromollusk, in the family Trochidae, the top snails or top shells.

Contents 1 Distribution 2 Habitat 3 Shell description 4 References

[edit] Distribution

This subspecies is endemic to New Zealand, off the Otago coast in the South Island.

[edit] Habitat

These top snails are found at depths of between 475 and 640 m.

[edit] Shell description

The shell is small, sharply conical, imperforate, taller than wide, strongly sculptured with heavy dodulous cords, two on the early spire whorls, increasing to three on the penultimate. The base has seven cords, all but the last two weakly nodulous.

The shell height is up to 3.8 mm, and width up to 3.5 mm.

[edit] References

• Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1