lunule

n.

半月形的东西；

The lunule of caligid copepods: an evolutionarily novel structure
Azure lunules in Argyria. Corneal changes resembling Kayser-Fleischer Rings.
On Regeneration and the Re-Formation of Lunules in Mellita
Influence of adsorption on the formation of embryo lunules
An experimental analysis of lunule function in the sand dollar Mellita quinquiesperforata
ON THE NATURE AND DEFINITION OF THE LUNULE, ESCUTCHEON AND CORCELET IN THE BIVALVIA
THE FUNCTIONAL SIGNIFICANCE OF THE LUNULES IN THE SAND DOLLAR, MELLJTA QUINQUIESPERFORATA
The Functional Significance of the Lunules in the Sand Dollar, Mellita quinquiesperforata
Roles for Holes in Sand Dollars (Echinoidea): A Review of Lunule Function and Evolution
Ontogenetic Regulatory Mechanisms and Evolution of Mellitid Lunules (Echinoidea, Clypeasteroida)