Genus Spirula J. B. P. A. de Lamarck, 1799 [1801]

(4-3-4-3-0-4-0-4-0-0-0-0-0)
Ref. Amer. Fish. Soc., 1980 p 151
Nesis, 1987 p 92
Syn. Litnus J. E. Gray, 1849;
Lituina H. F. Link, 1806
Ref. Abbott, 1974 p 569
Syn. Lituina H. F. Link, 1806;
Lituus J. E. Gray, 1849
Ref. Vaught, 1989 p 110

spirula (C. v. Linne, 1758) [T]
(4-3-4-3-0-4-0-4-0-1-0-0-0)
Common Spirula, Ram's Horn Squid
Ref. Abbott, 1974 p 569 d
Abbott & Dance, 1982 p 377 c
Amer. Fish. Soc., 1980 p 151
Nesis, 1987 p 92 d