Nautilus spirulaLinnaeus, 1758, p. 710, [Figures of several earlier authors cited] [Basis of the current name] Type Locality: America
Spirula fragilisLamarck, 1801, p. 102, [Argenville pl. 5, fig. G; Rumpius Mus. pl. 20, fig. 1; Martini I, pl. 20, figs. 184-185] [Synonym] Type Locality: Not stated
Lamarck, J. B. 1801. Systême des Animaux sans Vertèbres viii + 432 pp. Paris. Linnaeus, C. 1758. Systema Naturae Systema Naturae, 10th ed., vol. 1 824 pp. Laurentii Salvii: Holmiae [Stockholm, Sweden].