Literature
- Abbott, R. T. 1974. (2 ed.). American seashells. New York, Cincinnati, Toronto, London, Melbourne (van Nostrand Reinhold Co.): 1-663, 6405 figs.
- Danforth, C. H. 1907. (with introduction by J. S. Kingsley). A new pteropod from New England. Proc. Boston Soc. nat. Hist. 32: 1-19, figs A-B, pls 1-4.
- Grecchi, G. 1987. Revisione tassonomica degli esemplari fossili e subfossili di Clio polita rinvenuti in Mediterranea e in Mar Rosso. Boll. Malac. Milano 23(9/10): 297-303.
- Lalli, C. M. 1967. (unpublished). Studies on the structure and biology of two gymnosomatous pteropods, Clione kincaidi Agersborg and Crucibranchaea macrochira (Meisenheimer). Washington (Ph. D. thesis Univ. of Washington).
- Lalli, C. M. 1972. Food and feeding in Paedoclione doliiformis Danforth, a neotenous gymnosomatous pteropod. Biol. Bull. 143(2): 392-402, 4 figs.
- Lalli, C. M. and Conover, R. J. 1973. Reproduction and development of Paedoclione doliiformis, and a comparison with Clione limacina (Opisthobranchia, Gymnosomata). Mar. Biol. 19: 13-22, 7 figs.
- Lalli, C. M. and Conover, R. J. 1976. Microstructure of the veliger shells of gymnosomatous pteropods (Gastropoda: Opisthobranchia). Veliger 18(3): 237-240, 12 figs.
- Spoel, S. van der 1972a. A taxonomic outline of the Gymnosomata (Mollusca). Basteria 36 (2-5): 75-88.
- Spoel, S. van der 1976c. Pseudothecosomata, Gymnosomata and Heteropoda. Bohn, Scheltema & Holkema, Utrecht. 484 pp. 246 figs.
- Spoel, S. van der and Diester-Haass, L. 1976. First record of fossil shells of Gymnosomata. Bull. zool. Mus. Univ. Amst. 5 (11): 85-88.
- Starobogatov, J. I. 1971. Ordo Thecosomata; ordo Gymnosomata; ordo Heteropoda. In: Polevoy Zool. Inst. Akad. Moscou. opredeliteli planktona (without page or figure numbers, not bound, mimiographed). [in Russsian].
- Tesch, J. J. 1913c. Mollusca, Pteropoda. In: F. E. Schulze. Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen 36. Berlin (Friedberger and Sohn): i-xvi, 1-154, 108 figs.
- Tesch, J. J. 1950a. The Gymnosomata. 2. Dana Rep. 6(36): 1-55, 37 figs.
- Vecchione, M., and Grant, G. C. 1983. A multivariate analysis of planktonic molluscan distribution in the middle Atlantic bight. Cont. Shelf Res. 1(4): 405-424.
- Violanti, D., Grecchi, G. and Castradori, D. 1991. Paleoenvironmental intertretation of core BAN88-11GC (Eastern Mediterranean, Pleistocene-Holocen) on the grounds of Foraminifera, Thecosomata and calcareous nannofossils. Il Quaternario 4(1a): 13-39.