Terminology
- Apical whorls—the whorls near the apex or tip of the shell of gastropods
- Body whorl—The most recently formed whorl of a spiral shell, in which most of the body of the animal is found
- Nuclear whorl(s)—small, generally smooth whorls formed within the egg, and constituting the apex of the shell
- Protoconch—a larval shell of a mollusc; also refers to protoconch whorls of an adult shell
- Teleoconch—all the whorls of a shell after the protoconch whorls
Read more about this topic: Whorl (mollusc)