IUCN threat status:

Not evaluated

Brief Summary

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Introduction

Atlanta turriculata is a small species, with a maximal shell diameter of about 1.8 mm. The keel is tall and transparent, inserting between the last and penultimate whorls in animals larger than 1.3 mm. The spire (protoconch) consists of 4-1/4 whorls, with the first three whorls strongly elevated laterally and forming a "turret". A prominent spiral ridge extends outward from the middle of the spire whorls, beginning on the second whorl. Shell transparent; spire tissues are light brown to reddish brown. Eyes type a, operculum type a, and radula type I. Geographic distribution limted to the Pacific and Indian Oceans in tropical to subtropical waters. Vertical range in Hawaiian waters in the upper half of the epipelagic zone (0-200 m) during the day, with migration into the upper 100 m at night.

Diagnosis

  • Maximal shell diameter ca. 1.8 mm
  • Keel tall and colorless, inserting between the last and penultimate whorls in shells >1.3 mm diameter
  • Spire elevated, with the first three whorls forming a narrow "turret"
  • Prominent spiral ridge extends outward from the middle of each spire whorl
  • Color of spire light brown to reddish brown
  • Eyes type a, operculum type a, and radula type I

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