Limacina helicina helicina acuta

Literature

• Abbott, R. T. 1974. (2 ed.). American seashells. New York, Cincinnati, Toronto, London, Melbourne (van Nostrand Reinhold Co.): 1-663, 6405 figs.
• Aron, W. 1962. The distribution of animals in the eastern North Pacific and its relationship to physical and chemical conditions. J. Fish. Res. Brd Canada 19(2): 271-314, 13 figs.
• Bé, A. W. H. and Gilmer, A. W. 1977. A zoogeographic and taxonomic review of euthecosomatous Pteropoda. In: A. T. S., Ramsay (ed). Oceanic Micropalaeontology I. Acad. Press London: 733-808.
• Hida, T. S. 1957. Chaetognaths and pteropods as biological indicators in the North Pacific. U. S. Fish and Wildlife Service, Special Science. Report Fisheries 215: 1-13.
• McGowan, J. A. 1960. The systematics, distribution, and abundance of the Euthecosomata of the North Pacific. San Diego (Ph. D. thesis University of California): 1-212, 17 tabs, 54 figs.
• McGowan, J. A. 1963. Geographical variation in Limacina helicina in the North Pacific. Syst. Assoc. Publ. 5 (Speciation in the sea): 109-128, 14 figs.
• McGowan, J. A. 1968. The Thecosomata and Gymnosomata of California. Veliger 3 (suppl.): 103-130, pls 12-20.
• Pierrot-Bults, A. C. and Spoel, S. van der 1979a. Speciation in macrozooplankton. In: Spoel, S. van der and Pierrot-Bults, A. C. (eds). Zoogeography and diversity in plankton. Utrecht (Bunge Sci. Publ.): 144-167.
• Soutar, A. 1971. Micropalaeontology of anaerobic sediments and the California Current. In: Funnell, B. M. and Riedel, W. R. (eds.). The micropalaeontology of oceans. Cambridge (University Press): 223-230, figs 13. 1-13. 5.
• Spoel, S. van der 1967. Euthecosomata, a group with remarkable developmental stages (Gastropoda, Pteropoda). J. Noorduyn and Zn, Gorinchem, 375 pp.
  Summary (in Dutch also published separately).
• Spoel, S. van der 1971b. Some problems in infraspecific classification of holoplanktonic animals. Zeitschr. Zool. Syst. Evol. 9 (2): 107-138.
• Spoel, S. van der 1976c. Pseudothecosomata, Gymnosomata and Heteropoda. Bohn, Scheltema & Holkema, Utrecht. 484 pp. 246 figs.
• Spoel, S. van der 1983b. Sur la répartition, la variation et la réproduction de quelques mollusques planctoniques (Ptéropodes). BIOMAR Univ. Bruxelles 2: 79-92.
• Spoel, S. van der and Heyman, R. P. 1983. A comparative atlas of zooplankton. Biological patterns in the oceans. Bunge, Utrecht; Springer Verl., Berlin: 1-186.
• Spoel, S. van der and Pierrot-Bults, A. C. 1979. Zoogeography of the Pacific Ocean. In: S. van der Spoel and A. C. Pierrot-Bults (eds). Zoogeography and diversity in plankton. Utrecht (Bunge Sci. Publ.): 293-327.
• Tesch, J. J. 1948. The thecosomatous pteropods, 2. The Indo-Pacific. Dana Report 30: 1-45, 34 figs, 3 pls.
• Yamaji, I. 1991. Illustrations of the marine plankton of Japan. 3°Ed. Hoikusha Publ. Co. Ltd, Osaka.: 1-538.
• Zhang, F. 1966. The pelagic mollusca of the China coast, II: on the ecology of the pelagic moluscs of the Yellow Sea and the East China Sea Oceanol. Limnol. Sinica 2(1): 13-28.