Leucosioidea is a superfamily of decapods. There are 346 species of Leucosioidea, in 46 genera and 1 family. This superfamily has been around since the eocene epoch. It includes groups like Leucosiidae.
Definition: Component found in mineralized skeletal tissue, (a specialized form of biogenic tissue in which the extracellular matrix is mineralized, and which functions in mechanical and structural support.)
Definition: Hard framework, internal or external, which supports and protects softer parts of plant, animal or unicellular organism, and to which muscles usually attach in animals, includes skeletons (derived from Lawrence, 2005).