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Abbott, R. T., 1974. (2 ed.). American seashells. New York, Cincinnati, Toronto, London, Melbourne (van Nostrand Reinhold Co.): 1-663, 6405 figs.

Albergoni, A., 1975. Addensamento improvviso di Creseis acicula (Rang.)1828) in una baia del Mare Ligure. Conchiglie 11 (11/12): 233-236.

Almogi-Labin, A., Hemleben, C. and Deuser, W. G., 1988. Seasonal variation in the flux of euthecosomatous pteropods collected in a deep sediment trap in the Sargasso Sea. Deep-Sea Res., 35(3): 441-464, 4 tabs, 22 figs.

Almogi-Labin, A., 1982. Stratigraphic and paleoceanographic significance of Late Quaternary pteropods from deep-sea cores in the Gulf of Aqaba (Elat) and northernmost Red Sea. Marine Micropal. 7(1): 53-72.

Almogi-Labin, A., 1984. Population dynamics of planktonic Foraminifera and Pteropoda, Gulf of Aqaba, Red Sea. Proc. Koninkl. Nederl. Akad. Wetensch. (B9)87(4): 481-511.

Barash, A. and Danin, Z., 1971a. Opisthobranchia (Mollusca) from the Mediterranean waters of Israel. Israel J. Zool. 20 (First Ann. Symp. Israel Malac. Soc.): 151-200, 3 tabs, 3 pls, 2 maps.

Bartsch, P., 1915. Report on the Turton collection of South African marine mollusks, with additional notes on other South African shells contained in the United States National Museum. Smithonian Inst. U.S. Nat. Mus. Bull. 91: i-xii, 1-305, 54 pls.

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.

Bellini, R., 1905b. Les ptéropodes des terrains tertiaires en quaternaires d'Italie. Ann. Soc. r. zool. malac. Belgique 40: 23-45, figs 9-47.

Boas, J. E. V., 1886a. Bidrag til Pteropodernes. Morfologi of Systematik samt til Kundskaben om deres geografiske Udbredelse- Spolia Atlantica- Vidensk. Selsk. Skr. (6 Raekke) naturv. math. IV (1): 1-231.

Boltovskoy, D., 1973. Los eutecosomados del Mar Argentino y adyacencias (Mollusca, Pteropoda). Physis (Asoc. Argent. Cienc. Natur.) (A)32(85): 395-411, 1 tab., 1 text-fig., 18 figs (on 2 pls).

Boltovskoy, D., 1975a. Ecological aspects of zooplankton (Foraminifera, Pteropoda and Chaetognatha) of the southwestern Atlantic Ocean. Veliger 18(2): 203-216, 3 tabs, 7 figs.

Buccheri, G., 1984. Pteropods as climatic indicators in Quaternary sequences: a Lower-Middle Pleistocene sequence outcropping in Cava Puleo (Ficarazzi, Palermo, Sicilia). Palaeogeogr. Palaeoclim. Palaeoecol. 45: 75-86, 3 figs, 1 pl.

Casanova, B., Ducret, F. and Rampal, J., 1973. Zooplancton de Méditerranée orientale et de Mer Rouge (chaetognathes, euphausiacés, ptéropodes). Rapp. Proc.-verb. Réunions Comm. intern. Expl. Sci. Mer Méditerr. 21(8): 515-519.

Casanova, J.-P., 1980. Campagnes du 'Meteor' dans 'Atlantique N-E. Siphonophores, méduses et thécosomes. Distribution verticale et comparaisons faunistiques avec la Méditerranée. 'Meteor' Forschungserg. (D)32: 15-32, 6 tabs, 6 figs.

Chen, C. and Bé, A. W. H., 1964b. Seasonal distributions of euthecosomatous pteropods in the surface waters of five stations in the western North Atlantic. Bull. Mar. Sci. Gulf Caribb. 14 (2): 185-220.

Orbigny, A. d', 1836-1846. Voyage dans l'Amérique méridionale (le Brésil, la république orientale de l'Uruguay, la république Argentine, la Patagonie, la république du Chili, la république de Bolivia, la république du Pérou), exécuté pendant les années 1826, 1827, 1828, 1829, 1830, 1831, 1832 et 1833, 5(3). Mollusques. Paris (Bertrand).

1-48 are from 1835.

49-184 are from 1836.

185-376 are from 1837.

377-408 are from 1840.

409-488 are from 1841.

489-758 are from 1846.

atlas 20 pls is from 1846.

Orbigny, A. d', 1841-1855. Mollusques, 1. In: R. de la Sagra. Histoire physique, politique et naturelle de l'Ile de Cuba. Paris (Bertrand): 376 pp. (1855), atlas 28 pls (1853).

Dadon, J. R. and Boltovskoy, D., 1982. Zooplanktonic recurrent groups (Pteropoda, Euphausiacea, Chaetognatha) in the southeastern Atlantic Ocean. Physis Secc., (A)41(100): 63-83.

Dadon, J. R., 1989. Pteropoda Euthecosomata del Mar Epicontinental Argentino y Adyacencias. Thesis Univ. Buenos Aires: 1-285. (mimiogr.)

Dall, W. H., 1921. Summary of the marine shell-bearing mollusks of the north west coast of America, from San Diego, California to the polar sea, mostly contained in the collection of the United States National Museum, with illustrations of hitherto infigured species. Smithonian Inst. U. S. Nat. Mus. Bull. 112: 1-217, pls 1-22.

Jong, K. M. de, and Coomans, H. E., 1988. Marine Gastropods from Curaçao, Aruba and Bonaire. Sud. fauna Curaçao other Caribb. Isl. 121: 1-216.

Deevey, G. B., 1971. The annual cycle in quantity and composition of the zoo-plankton of the Sargasso Sea off Bermuda, 1. The upper 500 m. Limn. Oceanogr. 16(2): 219-240.

Deshayes, G. P. and Milne Edwards, H., 1836. Histoire naturelle des animaux sans vertebres, présentant les caracteres généraux et particuliers de ces animaux, leur distribution, leurs classes, leurs familles, leurs genres, et la citation des principales especes qui s'y rapportent; précédée d'une introduction offrant la détermination des caracteres essentiels de l'animal, sa distinction du végétal et des autres corps naturels; enfin, l`exposition des principes fondamentaux de la zoologie, par J. B. P. A. de Lamarck. Deuxieme édition, revue et augmentée de notes présentant les faits nouveaux dont la science s'est enrichie jusqu'à ce jour, 7. Histoire des mollusques. Paris (J. B. Bailliere): 1-736.

Eschscholtz, F., 1829. Zoologischer Atlas, enthaltend Abbildungen und Beschreibungen neuer Thierarten, wehrend des Flottcapitains von Kotzebue zweiter Reise um die Welt, auf der Russisch-Kaiserlichen Kriegsschlupp Predpriaetiâ in den Jahren 1823-1826 beobachtet, 3. Berlin (G. Reimer): 1-18, pls 12-15.

Franc, A., 1959. 10 Mollusques pélagiques. Campagne de la 'Calypso': Gulfe de Guinée. Ann. Inst. Océanogr. (NS) 37(4): 241-244, 1 fig.

Froget, C. and Pastouret, L., 1972. Les ptéropodes, moyen d'étude de la chronoclimatologie quaternaire. Comparaison de deux carottes prélevées en Méditerranée occidental et orientale. Rapp. Comm. int. Explor. Sci. Mer Médit., Monaco 20(4): 611-614.

Frontier, S., 1963a. Héteropods et ptéropodes récoltes dans le plankton de Nosy-Bé. Cah. ORSTOM 6(2): 213-227.

Frontier, S., 1963c. Zooplancton récolté en mer d'Arabie, Golfe Persique et Golfe d'Aden, 2. Ptéropodes, systématique et répartition. Cahiers ORSTOM, sér. océanogr. 6 (sér. Nosy-Bé, 2): 233-254.

Frontier, S., 1965. Le problem des Creseis. Cah. ORSTOM (oceanogr.) 3 (2): 11-17.

Frontier, S., 1973b. Zooplancton de la région de Nosy-Bé, 6. Ptéropodes hétéropodes, premier partie: especes holonéritiques et néritiquesinternes. Cah. ORSTOM, Océanogr. 11(3): 273-289, 17 figs.

Frontier, S., 1973c. Zooplancton de la région de Nosy-Bé, 7. Ptéropodes, hétéropodes, 2. Especes néritiques. externes et océaniques tolérantes. Cah. ORSTOM, sér. océanogr. 11(3): 291-302.

Furnestin, M. L., 1968. Le zooplancton de la Méditerranée (bassin occidental), essay de synthese. J. Cons. int. Explor. Mer, J. Cons. 32(1): 25-69, 9 figs.

Furnestin, M. L., 1979. Aspects of the zoogeography of Mediterranean plankton. In: S. van der Spoel and A. C. Pierrot-Bults (eds). Zoogeography and diversity in plankton. Utrecht (Bunge Sci. Publ.): 191-253.

Gabe, M., 1959. Particularités histochimiques de la glande hypobranchiale des ptéropodes thécosomes. Ann. Histochim. 4(2): 85-93.

Gilmer, R. W. and Harbison, G. R., 1986. Morphology and field behavious of pteropod molluscs: feeding methods in the families Cavoliniidae, Limacinidae and Peraclididae (Gastropoda: Thecosomata). Mar. Biol. 91: 47-57, 1 tab., 7 figs.

Gilmer, R. W., 1986. Preservation artifacts and their effects on the study of euthecosomatous pteropod mollusks. Veliger 29(1): 48-52, 2 figs.

González, C. and Princz, D., 1979. Moluscos heteropodos y pteropodos de la zone central del caribe venezolano. Bol. Inst. oceonogr. Cumana 18(1-2): 99-107.

Gould, A. A., 1852. United States exploring expedition. During the years 1838, 1839, 1840, 1841, 1842. Under the command of Charles Wilkes, U. S. N. 12. Boston (Gould and Lincoln): i-xv, 1-510 (atlas: see Gould 1856).

Gray, J. E., 1850. Catalogue of the Mollusca in the collection of the British Museum, 2. Pteropoda. London (British Museum, E. Newman): iv + 45 pp.

Grecchi, G. and Bertolotti, M., 1988 Interpretazione paleoclimatica della carota CG18-BAN82 basata sull'analisi di Thecosomata Euthecosomata del Quaternario del Mediterraneo orientale. Bull. Mus. Reg. Sci. Nat. Torino 6(1): 73-132.

Grecchi, G., 1982. Pteropodi pliocenici dell'Italia settentrionale. Riv. Ital. Paleont. 87(4): 703-738, 2 tabs, 5 figs, pls 52-54.

Grecchi, G., 1984. Molluschi planctonici e bentonici in sedimenti sapropelitici del Quaternario della dorsalee Mediterranea. Boll. Malacologico 20(1-4): 1-34, 3 pls.

Haagensen, D. A., 1976 Caribbean zooplankton. Part II. Thecosomata. Off. Nav. Res. Dept. of the Navy. U. S. Govt. Print Off. Washington D. C.: 551-712.

Hedley, C., 1907a. The Mollusca of Mast Head Reef, Capricorn Group, Queensland. Proc. linn. Soc. N. S. W. 32(3)(127): 476-513, pls 16-21.

Herman, Y., 1971b. Vertical and horizontal distribution of pteropods in quaternary sequences. In: B. M. Funnel and W. R. Riedel. The micropalaeontology of oceans: 468-486. Univ. Press, Cambridge.

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.

Hubendick, B., 1951. Pteropoda, with a new genus. Further zoological results of the Swedish Antarctic Expedition 1901-1903, 4(6): 1-10.

Ivanova, E. V., 1985. Late Quaternary biostratigraphy and paleotemperatures of the Red Sea and the Gulf of Aden based on planktonic Foraminifera and pteropods. Mar. Micropal. 9: 335-364.

Johnson, C. W., 1934. List of marine Mollusca of the Atlantic coast from Labrador to Texas. Proc. Boston Soc. Nat. Hist. 40(1): 1-204.

Lewis, J. B. and Fish, A. G., 1969. Seasonal variation of the zooplankton fauna of surface waters entering the Caribbean Sea at Barbados. Caribb. J. Sci. 9(1-2): 1-24.

MacPherson, J. H. and Gabriel, C. L., 1962. Marine mollusca of Victoria. Thecosomata: 248-250.

Magaldi, N. H., 1977a. Moluscos holoplanctonicos del Atlantico suboccidental. III. Heteropods y pteropods de aguas superficiales Brasilenas y Uruguayas. Com. Soc. Malac. Urug. 4 (33): 295-325.

Massy, A. L., 1920. Eupteropoda (Pteropoda Thecosomata) and Pterota (Pteropoda Gymnosomata). British Antarctic ('Terra Nova') Expedition 1910, Nat. Hist. Rep., Zoology 2(9). Mollusca, 3: 203-232, 9 figs.

McGowan, J. A. and Fraundorf, V. J., 1966. The relationship between size and net used and estimates of zooplankton diversity. Limn. Oceanogr. 11(4): 456-469.

McGowan, J. A., 1967. Distributional atlas of pelagic molluscs in the California Current region. CALCOFI Atlas 6: 1-218.

McGowan, J. A., 1968. The Thecosomata and Gymnosomata of California. Veliger 3 (suppl.): 103-130, pls 12-20.

Meisenheimer, J., 1905c. Pteropoda. Deutsch. Tiefsee Exp. 1898-1899 IX: 1-314, Atlas Pl. 1-27 Map 1-9.

Menzies, R. J., 1958. Shell-bearing pteropod gastropods from mediterranean plankton (Cavoliniidae). Pubbl. Staz. Zoologica Napoli 30 (3): 381-401, 5 tabs, 9 figs, 8 maps.

Newman, L. J., 1990. Holoplanktonic molluscs (Gastropoda; Thecosomata, Gymnosomata, and Heteropoda) from the waters of Australia and Papua New Guinea: their taxonomy, distribution and biology. PhD Thesis Univ. Qld. Australia. 208 pp.

Ode, H., 1991. Distribution and records of the marine mollusca in the North-West Gulf of Mexico. Texas Conch. 27(3/4): 72-83.

Okutani, T., 1957a. Holoplanktonic Gastropoda in the 'Kuroshio' area, south of Hinshu, May 1955. Rec. oceanogr. Wks. Japan, (NS) Spec. No.: 134-142, 3 figs.

Pafort-van Iersel, G. J. S., 1985a. Contributions to pelagic zoogeography of the mid North Atlantic Ocean, 1. Distribution of pteropods, heteropods and silver hatchetfishes. In: G. J. S. Pafort-van Iersel. A contribution to pelagic zoogeography of the mid North Atlantic Ocean (7th paper) (Thesis Univ. van Amsterdam): 1-45, 5 tabs, 4 figs, 27 append.

Peck, J. I., 1894. Scientific results of explorations by the U. S. Fish commission steamer Albatross, 26. Report on the pteropods and heteropods collected by the U. S. Fish commission steamer Albatross during the voyage from Norfolk, Va., to San Francisco, Cal., 1887-1888, 1. The thecosomatous pteropods. Proc. U. S. Nat. Museum, (1893) 16: 451-466, pls 53-55.

Pelseneer, P., 1888a. Report on the Pteropoda collected by H. M. S. Challenger during the years 1873-1876, 2. The Thecosomata Reports on the scientific. Results of the voyage of H. M. S. Challenger during the years 1873-1876 (zool.) 23(1): 1-132, 2 figs, 2 pls.

Pelseneer, P., 1888b. Report on the Pteropoda collected by H. M. S. Challenger during the years 1873-1876, 3. Anatomy Reports on the scientific. Results of the voyage of H. M. S. Challenger during the years 1873-1876(zool.) 23(2): 1-97, 1 tab., 5 figs, 5 pls.

Pfeffer, G., 1879 (1880a). Übersicht der während der Reise um die Erde in den Jahren 1874-1876 auf S. M. Schiff 'Gazelle' und von Hrn. Dr. F. Jagor auf seiner Reise nach den Philippinen in den Jahren 1857-1861 gesammelten Pteropoden. Monatsber. Kgl. Preuss. Akad. Wiss. Berlin (1879): 230-246, 20 figs.

Pfeffer, G., 1880b. Die Pteropoden des Hamburger Museums. Abhandlu. Naturwissensch. Ver. Hamburg 7: 69-99, pl. 7.

Pruvot-Fol, A., 1954. Mollusques opisthobranches. Faune de France 58. Paris (Lechevalier): 1-460, 173 figs, 1 pl.

Rampal, J., 1965a. Ptéropodes thécosomes indicateurs hydrologiques. Rev. Trav. Inst. Pàches Marit. (Paris) 29(4): 393-400, 5 figs.

Rampal, J., 1966. Pèches planctoniques superficielles et profondes en Méditerranée occidentale (campagne de la 'Thalassa', janvier 1961, entre les îles Baléares, la Sardaigne et l'Algérois, 6). Ptéropodes. Rev. Trav. Inst. Pàches Marit. (Paris) 30: 375-383, 6 figs.

Rampal, J., 1967. Répartition quantitative et bathymétrique des ptéropodes thécosomés récoltés en Méditerranéee occidentale au Nord du 40° parallèle. Remarques morphologiques sur certaines espèces. Rev. Trav. Inst. Pèches Marit. (Paris) 31(4): 1-13.

Rampal, J., 1968a. Les ptéropodes thécosomes en Méditerranée. Comm. Int. Explor. sci. Mer Méditerr.: 1-142, 6 tabs, 12 figs. (PhD thesis).

Rampal, J., 1968b. Neurosécrétion chez quelques ptéropodes thécosomes. Rapp. Proc.-verb. Réunion Comm. intern. Explor. scient. Mer Médit. 19(3): 543-545, 1 fig.

Rampal, J., 1973a. Clés de détermination des ptéropodes thécosomes de Méditerranée et de l'Atlantique euroafricain. Rev. Trav. Inst. Pàches Marit. (Paris) 37(3): 369-381.

Rampal, J., 1975. Les thécosomes (mollusques pélagiques). Systématique et évolution écologie et biogéographie méditerranéennes. Aix-Marseille (Thesis Univ. Provence CNRS AO 11932): 1-485, 15 tabs, 99 figs.

Rampal, J., 1977b. Diversité de structure de la coquille chez les thécosomes. Atti Soc. Ital. Sci. Nat. Museo Civ. St. Nat. Milano 118(2): 207-211, 1 fig.

Rampal, J., 1980a. Biogeographie Méditerranéne d'apres l'etude des Thécosome (Mollusques pelagiques). J. Etud. Syst. Biogeogr. Médit Cagliari CIESM: 45-54.

Rampal, J., 1985a. Distribution des Mollusques Thécosome en mer Rouge Meridionale. Rapp. Comm. int. Mer Médit., 29 (9): 265-267.

Rampal, J., 1985b. Systematique du genre Creseis. Rapp. Comm. int. Mer Médit. 29 (9): 259-236.

Rampal, J., 1990. Les Thecosomes de la mer Rouge. Bull. Inst. Oceanogr. Monaco (spec.) 7: 103-107.

Rang, P. C. A. L. and Férussac, D. de, 1830. Ueber die Pteropoden und andere Mollusken. Not. Geb. Natur Heilk. 26(17)(567): 260-262.

Rang, P. C. A. L., 1828b. Notice sur quelques mollusques nouveaux appartenant au genre Cléodore, et établissement et monographie du sous-genre Créseis. Ann. Sci. Nat. 13: 302-319, pls 17-18.

Rao, T. S. S., 1979. Zoogeography of the Indian Ocean. In: Spoel, S. van der and Pierrot-Bults, A. C. (eds). Zoogeography and diversity in plankton. Utrecht (Bunge Sci. Publ.): 254-292.

Richter, G., 1976a. Creseis chierchiae Boas, eigene Art oder Jugendstadium von Hyalocylis striata (Rang)? Arch. Moll. 107 (1/3): 145-148.

Richter, G., 1979. Die thecosomen Pteropoden der "Meteor"-Expedition in den Indischen Ozean 1964/65. "Meteor" Forsch. Ergebnisse (D) 29: 1-29.

Ros, J., 1976. Catálogo provisional de los Opistobranquios (Gastropoda, Euthyneura) de las costas ibéricas. Miscel. Zool. 3(5): 21-48.

Rottman, M., 1976. Euthecosomatous pteropods (Mollusca) in the Gulf of Thailand and the South China Sea: seasonal distribution and species associations. Naga Rep. 4 (6): 1-117.

Rottmann, M. L., 1978. Ecology and recurrent groups of pteropods, euphasiids and chaetognaths in the Gulf of Thailand and the South China Sea. Mar. Biol. 48(1): 63-78, 7 tabs, 4 figs.

Sakthivel, M., 1967. A preliminary report on the distribution and relative abundance of Euthecosomata with a note on the seasonal variation of Limacina species in the Indian Ocean. In: Proc. Symp. 'Indian Ocean' March 1967. Bull. N. I. S. I. 38: 700-717, 17 figs.

Sakthivel, M., 1975. A note an the annual variation of the euthecosomatous pteropods along the meridian 78° East in the Indian Ocean. Bull. Plank. Soc. Japan 21: 41-44.

Sakthivel, M., 1976a. Geographical and seasonal distribution of Euthecosomata (Pteropoda, Gastropoda) in the Indian Ocean. Meteor Forsch. Ergebniss D23: 1-22.

Sakthivel, M., 1977. Further studies of plankton ecosystems in the eastern Indian Ocean, 8. Seasonal, diurnul and latitudinal variations in abundance of Euthecosomata along the 110° meridian. Aust. J. Mar. Freshw. Research 28(5): 663-671.

Schalk, P. H., 1990. Spatial and seasonal variation in pteropods (Mollusca) of Indo-malayan waters related to watermass distribution. Mar. Biol. 105: 59-71.

Schiemenz, P., 1906. Die Pteropoden der Plankton Expedition. Erg. Plankt. Exp. Humboldt Stift. 2 F.b.: 1-37.

Sentz-Braconnot, E., 1965. Sur la capture des proies par le ptéropode gymnosome Pneumodermopsis paucidens (Boas). Cah. Biol. Mar. 6: 191-194, 1 fig.

Solis, N. B. and Westernhagen, H. von , 1978. Vertical distribution of euthecosomatous pteropods in the upper 100 m. of the Hilutangan Channel Cebu, The Philippines. Mar. Biol. 48(1): 79-87.

Souleyet, [F. L. A.], 1851. (introd. S. Petit) Ordre des ptéropodes. J. Conchyl. 2: 28-38.

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]

Stepien, J. C., 1980. The occurrence of chaetognaths, pteropods and euphausiids in relation to deep flow reversals in the Strait of Florida. Deep Sea Res. 27A: 987-1011.

Steuer, A., 1911. Adriatische Pteropoden. Sitz. Ber. Math.-Naturw. Klasse k. k. Akad. Wien 120(1): 709-730, 9 figs.

Stubbings, H. G., 1938. Pteropoda. Sci. Rep. John Murray Expedition 1933-1934, 5(2): 3-33, 2 figs.

Taki, I. and Okutani, T., 1962. Reports on the biology of the 'Umitaka-Maru' expedition, 2. Planktonic Gastropoda collected by the trainning vessel 'Umitaka-Maru' from the Pacific and Indian Oceans in the course of het Antarctic expedition, 1956. J. Fac. Fish. Anim. Husb. Hiroshima Univ. 4: 81-97.

Tanaka, T., 1971. Pteropoda and Heteropoda (Gastropoda, Mollusca) collected in the western Pacific Ocean in the northern summer 1968. Kaiyo Rep. 3: 27-38.

Tesch, J. J., 1904. The Thecosomata and Gymnosomata of the Siboga Expedition. Siboga Rep. 52: 1-92, 156 figs.

Tesch, J. J., 1908. The Pteropoda of the Leyden museum. Notes Leiden Mus. 29: 181-203, pl. 7.

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., 1946. The thecosomatous pteropods, 1. The Atlantic. Dana Report 28: 1-82, 37 figs, 8 pls.

Tesch, J. J., 1948. The thecosomatous pteropods, 2. The Indo-Pacific. Dana Report 30: 1-45, 34 figs, 3 pls.

Thiede, J., 1975b. Shell- and skeleton- producing plankton and nekton in the Eastern North Atlantic Ocean. 'Meteor' Forschungsergeb. (C)20: 33-79.

Thiriot-Quiévreux, C., 1988. Chromosome studies in pelagic opisthobranch molluscs. Can. J. Zool. 66: 1460-1473.

Tokioka, T., 1955c. On some plankton animals collected by the Syunkotu-Maru in May-June 1954, 4. Thecosomatous pteropods. Publ. Seto mar. biol. Lab. 5(1): 59-74, pls 7-13.

Tokioka, T., 1961. The structure of the operculum of the species of Atlantidae (Gastropoda: Heteropoda) as a taxonomic criterion, with records of some pelagic mollusks in the North Pacific. Publ. Seto mar. biol. Lab. 9(2): 267-332 (art. 15, pp. 1-86).

Troost, D. G., Sutomo, A. B. and Wenno, L. F., 1976 Distribution and abundance of major zooplankton groups in Ambon Bay (Maluku, Indonesia) during a salp swarming with notes on Chaetognatha and Pteropoda species. Mar. Res. Indonesia 16: 31-44.

Troschel, F. H., 1854. Beiträge zur Kenntniss der Pteropoden. Arch. Naturgeschichte 20(1): 196-241, pls 8-10.

Spoel, S. van der and Boltovskoy, D., 1981. Pteropoda. In: Boltovskoy, D. (ed.). Atlas del zooplancton del Atlantico Sudoccidental. Publ. INIDEP Argentina: 493-512.

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, Boltovskoy, D. and Jankivich, S. S., 1981. Classification y distribucion. In: Boltovskoy, D. (ed.). Atlas del zooplancton del Atlantico Sudoccidental. Publ. INIDEP Argentina: 512-524.

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, 1968b. The shell and its shape in Cavoliniidae (Pteropoda Gastropoda). Beaufortia 15 (206): 185-189.

Spoel, S. van der, 1970a. Morphometric data in Cavoliniidae with notes on a new forma of Cuvierina columnella (Rang, 1927) (Gastropoda, Pteropoda). Basteria 34 (5-6): 103-151.

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Spoel, S. van der, 1971d. The pelagic Mollusca from the "Atlantide" and "Galathea" Expeditions collected in the East Atlantic. Atlantide Rep. 11: 99-139.

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