Genus Spirula refers to a type of marine mollusk that is typically found in deep waters. This species is unique due to its spiral-shaped shell, which resembles a miniature ammonite. Some commonly used synonyms for Genus Spirula include ram's horn squid, horned squid, and simply spirulid. These names are often used interchangeably, depending on the context and region. Additionally, some scholars classify Genus Spirula as part of the Sepiida family, which includes many other species of squid. Despite its relative obscurity, Genus Spirula remains an important subject of study for marine biologists, who are interested in understanding the intricacies of its reproduction, feeding habits, and ecological role.