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Diversification and germ-line determination

Published online by Cambridge University Press:  08 February 2016

Leo W. Buss
Leo W. Buss*
Affiliation:
Department of Biology, Yale University, New Haven, Connecticut 06511
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Abstract

The species richness of extant metazoan phyla displays a strong association with the ontogenetic timing of germ-line determination. Taxa with early ontogenetic determination of the germ-line are characterized by low species number relative to taxa with late or variable determination. A test for a similar association in fossil taxa is compromised by the fact that all phyla displaying early determination of the germ-line are small, soft-bodied groups which lack a reliable fossil record. To the extent that this correlation reflects causality, patterns of evolutionary diversification have been decidedly non-random. The fact that ontogenetic timing of germ-line determination defines the extent to which genetic variation arising during the course of ontogeny may be inherited suggests a possible causal foundation for the pattern.

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Paleobiology , Volume 14 , Issue 4 , Fall 1988 , pp. 313 - 321
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Copyright © The Paleontological Society 

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References

Literature Cited

Anderson, D. T. 1966a. The comparative embryology of the Polychaeta. Acta Zoologica 47:1–42.CrossRefGoogle Scholar
Anderson, D. T. 1966b. The comparative early embryology of the Oligochaeta, Hirudinea and Onychophora. Proceedings of the Linnean Society of New South Wales 91:10–43.Google Scholar
Anderson, D. T. 1969. On the embryology of the cirripede crustaceans Tetraclita rosea (Krauss), Tetraclita purpurascens (Wood), Chthamalus antennatus (Darwin), and Chamaesipho columna (Splengler) and some considerations of crustacean phylogenetic relationships. Philosophical Transactions of the Royal Society, London B256:183–235.Google Scholar
Anderson, D. T. 1972a. The development of hemimetabolous insects. Pp. 95–163. In Counce, S. J., and Waddington, C. H. (eds.), Developmental Systems, vol. I: Insects. Academic Press; New York.Google Scholar
Anderson, D. T. 1972b. The development of holometabolous insects. Pp. 165–242. In Counce, S. J., and Waddington, C. H. (eds.), Developmental Systems, vol. I: Insects. Academic Press; New York.Google Scholar
Anderson, D. T. 1973. Embryology and Phylogeny in Annelids and Arthropods. Pergamon; New York. 495 pp.Google Scholar
Arnold, J. M. and Williams-Arnold, L. D. 1977. Cephalopoda: Decapoda. Pp. 243–290. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction in Marine Invertebrates, vol. IV: Molluscs: Gastropods and Cephalopods. Academic Press; New York.CrossRefGoogle Scholar
Bambach, R. K. 1985. Classes and adaptive diversity: the ecology of diversification in marine faunas through the Phanerozoic. Pp. 191–254. In Valentine, J. W. (ed.), Phanerozoic Diversity Patterns. Princeton University Press; New Jersey.Google Scholar
Barnes, R. D. 1980. Invertebrate Zoology. (Fourth ed.) Saunders College; Philadelphia. 743 pp.Google Scholar
Beauchamp, P. de. 1956. Classe des rotifères. Pp. 1225–1377. In Grasse, P. P. (ed.), Traité de Zoologie, vol. IV, fasc. III. Masson; Paris.Google Scholar
Bednarz, S. 1962. The developmental cycle of germ-cells in Fasciola hepatica L. 1758 (Trematoda, Digenea). Zoologica Polaniae 12:439–466.Google Scholar
Bednarz, S. 1973. The developmental cycle of the germ-cells in several representatives of Trematoda (Digenea). Zoologica Polaniae 23:279–326.Google Scholar
Bell, G. 1982. The Masterpiece of Nature. University of California Press; Berkeley. 635 pp.Google Scholar
Benazzi, M. 1966. Consideration on the neoblasts of planarians on the basis of certain karyological evidence. Chromosoma 19:14–27.CrossRefGoogle ScholarPubMed
Berrill, N. J. 1950. The Tunicata. Bernard Quartich; London. 354 pp.Google Scholar
Berrill, N. J. 1975. Chordata: Tunicata. Pp. 24–282. In Giese, A. C, and Pearse, J. S. (eds.), Reproduction in Marine Invertebrates, vol. II: Entoprocts and Lesser Coelomates. Academic Press; New York.Google Scholar
Berrill, N. J. and Liu, C. K. 1948. Germ plasm, Weismann and hydrozoa. Quartery Review of Biology 23:124–132.CrossRefGoogle Scholar
Borjevic, R. 1969. Etude du developpement de la différenciation cellulaire d'éponges calcaires calcinénnes (genre Clathrina et Ascandra) Annals d'Embryologie et de Morphogenese 2:15–36.Google Scholar
Bounoure, L. 1939. L'origine des cellules reproductrices et le problème de la lignée germinale. Gauthier-Villars; Paris. 239 PP.Google Scholar
Boveri, T. 1892a. Über die Bildungsstätte der Geschlechtsdrüsen und die Entstehung der Genitalkammern beim Amphioxus. Anatomischer Anzeiger 7:170–181.Google Scholar
Boveri, T. 1892b. Die Nierencanälchen des Amphioxus: Ein Beitrag zur Phylogenie des Urogenitalsystems der Wirbelthiere. Zoologische Jahrbucher, Abteilung Anatomie und Ontogenie der Tiere 5:429–510.Google Scholar
Brock, J. 1886. Die Entwicklung des Geschlechtsapparates der Stylommatophoren Pulmonaten nebst Bemerkungen über die Anatomie und Entwicklung einiger anderen Organsysteme. Zeitschrift für Wissenschaftliche Zoologie 144:429–510.Google Scholar
Buss, L. W. 1983. Evolution, development and the units of selection. Proceedings of the National Academy of Sciences, USA 80:1387–1391.CrossRefGoogle ScholarPubMed
Buss, L. W. 1985. The uniqueness of the individual revisited. Pp. 467–505. In Jackson, J. B. C., Buss, L. W., and Cook, R. E. (eds.), Population Biology and Evolution of Clonal Organisms. Yale University Press; New Haven, Connecticut.Google Scholar
Buss, L. W. 1987. The Evolution of Individuality. Princeton University Press; New Jersey. 201 pp.Google Scholar
Caullery, M. and Lavallée, A. 1912. Recherches sur le cycle evolutif des Orthonectides. Bulletin Biologique de la France et de la Belgique 46:139–171.Google Scholar
Cavallin, M. 1976. La ségrégation de la lignée germinale chez le phasme Carausius morosus. Societe Zoologique de France Bulletin 101(suppl. 4):15–21.Google Scholar
Charniaux-Cotton, H. 1964. La lignée germinale chez les arthropodes. Pp. 139–174. In Wolff, E. (ed.), L'Origine de la Lignée Germinale chez les Vertebrés et chez quelques Groups d'Invertébrés. Hermann; Paris.Google Scholar
Coninck, L. A. de. 1965. Classe des nématodes: Systématique des nématodes. Sous-classe des Adenophorea. Pp. 586–681. In Grasse, P. P. (ed.), Traite de Zoologie, vol. IV, fasc. II. Masson; Paris.Google Scholar
Cort, W. W. 1944. The germ cell cycle in the digenetic trematodes. Quartery Review of Biology 19:275–284.CrossRefGoogle Scholar
Counce, S. J. and Waddington, C. H., eds. 1972. Developmental Systems, vol. I: Insects. Academic Press; New York. 304 pp.Google Scholar
Counce, S. J. and Waddington, C. H., eds. 1973. Developmental Systems, vol. II: Insects. Academic Press; New York. 615 pp.Google Scholar
Dales, R. P. 1963. Annelids. Hutchinson University Library; London. 200 pp.Google Scholar
Doncaster, L. 1902. On the development of Sagitta; with notes on the anatomy of the adult. Quartery Journal of Microscopic Science 46:351–398.Google Scholar
Dorsett, D. A. 1961. The reproduction and maintenance of Polydora ciliata (Johnst.) at Whitstable. Journal of the Marine Biological Association, UK 41:383–396.CrossRefGoogle Scholar
Dunn, M. C. 1959. Studies on the germ cell cycle of Neorenifer wardi (Byrd, 1936). Transactions of the American Microscopic Society 78:385–408.CrossRefGoogle Scholar
Eldredge, N. 1985. Unfinished Synthesis. Oxford University Press; Oxford. 237 pp.Google Scholar
Fedecka-Bruner, B. 1964. Radiodestruction des testicules suivis de régénération chez la planaire Dugesia lugubris. Comptes Rendus Academie des Science, Paris 258:3353–3356.Google Scholar
Franzin, A. 1977. Gametogenesis of bryozoans. Pp. 1–22. In Woolacott, R. M., and Zimmer, R. L. (eds.), Biology of Bryozoans. Academic Press; New York.Google Scholar
Garaudy-Tamarelle, M. 1969. Quelques observations sur le développement embryonnaire de l'ébauche génitale chez le Collembole Anurida maritima Guérin. Comptes Rendus Academie des Science, Paris 268:945–947.Google Scholar
Garaudy-Tamarelle, M. 1970. Observations sur la régénération de la lignée germinale chez le Collembole Anurida maritima Guérin. Explication de son caractère intravitellin. Comptes Rendus Academie des Science, Paris 270:1149–52.Google Scholar
Garbe, A. 1901. Untersuchungen über die Entsthehung der Geschlechtsorgane bei der Ctenophoren. Zeitschrift für Wissenschaftliche Zoologie 69:472–491.Google Scholar
Gates, G. E. 1943. Some further notes on regeneration in Perionyx excavatus. Proceedings of the National Academy of Science, India B13:168–179.Google Scholar
Gates, G. E. 1951. Regeneration in an India earthworm, Perionyx millardi. Proceedings of the National Academy of Science, India B34:115–147.CrossRefGoogle Scholar
Ghirardelli, E. 1968. Some aspects of the biology of the chaetognaths. Advances in Marine Biology 6:271–375.CrossRefGoogle Scholar
Gilinsky, N. L. and Bambach, R. K. 1986. The evolutionary bootstrap: a new approach to the study of taxonomic diversity. Paleobiology 12:251–268.CrossRefGoogle Scholar
Goette, A. 1907. Vergleichende Entwicklungsgeschichte der Geschlechtsindividuen der Hydropolypen. Zeitschrift für Wissenschaftliche Zoologie 87:1–335.Google Scholar
Gould, S. J., Raup, D. M., Sepkoski, J. J. Jr., Schopf, T. J. M., and Simberloff, D. S. 1977. The shape of evolution: a comparison of real and random clades. Paleobiology 3:23–40.CrossRefGoogle Scholar
Gremigni, V. 1974. The origin and cytodifferentiation of germ cells in the planarians. Bulletin of Zoology 41:359–377.CrossRefGoogle Scholar
Guilford, H. G. 1958. Observations on the development of the miracidium and the germ cell cycle in Heronimus chelydrae MacCallum (Trematoda). Journal of Parasitology 44:64–74.CrossRefGoogle ScholarPubMed
Gustafsson, M. K. S. 1976. Studies on cytodifferentiation in neck region of Diphyllobothrium dendriticum Nitzch, 1824 (Cestoda, Pseudophyllidea). Zeitschrift für Parasitenkunde 50:323–329.CrossRefGoogle Scholar
Gustafsson, M. K. S. 1977. Aspects of the Cytology and Histogenesis in Cestodes with Special Reference to the Genus Diphyllobothrium. Unpublished Ph.D. thesis, Åbo Akademi. Finland. 237 pp.Google Scholar
Hammarsten, O. D. and Runnström, J. 1925. Zur Embryologie von Acanthochiton discrepans Brown. Zoologische Jahrbucher, Abteilung Anatomie und Ontogenie der Tiere 47:261–318.Google Scholar
Hansen, T. A. 1978. Larval dispersal and species longevity in Lower Tertiary gastropods. Science 199:885–887.CrossRefGoogle ScholarPubMed
Herlant-Meewis, H. 1946a. Contribution à l'étude de la régénération chez les Oligochètes. Reconstitution du germen chez Lumbricillus lineatus (Enchytraeidés). Première partie: élements régénérateurs. Societé Royala Zoologique de Belgique Brussels 77:5–47.Google Scholar
Herlant-Meewis, H. 1946b. Contribution à l'étude de la régénération chez les Oligochètes. Reconstitution du germen chez Lumbricillus lineatus (Enchytraeidés). Deuxième partie. Archives de Biologie 57:197–306.Google Scholar
Higgins, R. P. 1974. Kinorhyncha. Pp. 507–518. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction of Marine Invertebrates, vol. I: Acoelomate and Pseudocoelomate Metazoans. Academic Press; New York.CrossRefGoogle Scholar
Higley, R. M. and Heath, H. 1912. The development of the gonad and the gonoducts in two species of chitons. Biological Bulletin (Woods Hole, Massachusetts) 22:95–97.CrossRefGoogle Scholar
Hoffman, H. 1922. Über die Entwicklung der Geschlechtsorgane bei Limax maximus L. Zeitschrift für Wissenschaftliche Zoologie 119:493–538.Google Scholar
Hope, W. D. 1974. Nematoda. Pp. 391–470. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction in Marine Invertebrates, vol. I: Acoelmates and Pseudocoelomate Metazoans. Academic Press; New York.CrossRefGoogle Scholar
Hummon, W. D. 1974. Gastrotricha. Pp. 485–506. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction in Marine Invertebrates, vol. I: Acoelmates and Pseudocoelomate Metazoans. Academic Press; New York.CrossRefGoogle Scholar
Huss, J. 1937. Zweite und letzte Unterklasse der Acopa: Ascidiaceae—Tethyodeae—Seescheiden. Pp. 545–672. In Kükenthal, W., and Krumbach, T. (eds.), Handbuch der Zoologie, vol. 5: Tunicata. W. de Gruyter & Company; Berlin.Google Scholar
Hyman, L. H. 1951a. The Invertebrates, vol. III: Acanthocephala, Aschelminthes, and Entoprocta. McGraw-Hill; New York. 572 pp.Google Scholar
Hyman, L. H. 1951b. The Invertebrates, vol. II: Platyhelminthes and Rhychocoela. The Acoelomate Bilateria. McGraw-Hill; New York. 550 pp.Google Scholar
Hyman, L. H. 1955. The Invertebrates, vol. IV: Echinodermata. McGraw-Hill; New York. 763 pp.Google Scholar
Hyman, L. H. 1962. The Invertebrates, vol. I: Mollusca. McGraw-Hill; New York. 792 pp.Google Scholar
Iwanoff, P. P. 1928. Die Entwicklung der Larvalsegmente bei den Anneliden. Zeitschrift für Morphologie und Okologie der Tiere 10:62–161.CrossRefGoogle Scholar
Jackson, J. B. C. 1974. Biogeographic consequences of eurytopy and stenotopy among marine bivalves and their evolutionary significance. American Naturalist 108:541–560.CrossRefGoogle Scholar
John, C. 1933. Habits, structure, and development of Spadella cephaloptera. Quartery Journal of Microscopic Science 75:625–696.Google Scholar
Jura, C. 1967. Origin of germ cells and gonad formation in embryogenesis of Terodontophora bielanensis (Waga) (Collembola). Acta Biologica Cracoviensia, Série Zoologie 10:97–103.Google Scholar
Kautzsch, G. 1910. Über die Entwicklung von Agelena labyrinthica Clerck. Zoologische Jahrbucher, Abteilung Anatomie und Ontogenie der Tiere 30:535–602.Google Scholar
Komai, T. 1942. The structure and development of the sessile ctenophore Lyrocteis imperatoris Komai. Memoirs of the College of Science, Kyoto Imperial University B17:1–36.Google Scholar
Krempf, A. 1921. Coeloplana gonoctena: biologie, organisation, développement. Bulletin Biologique de la France et de la Belgique 54:252–312.Google Scholar
Kühn, A. 1910. Die Entwicklung der Geschlechtsindividuen der Hydromedusen. Studien zur Ontogenese und Phylogenese der Hydroiden. II. Zoologische Jahrbucher, Abteilung Anatomie und Ontogenie der Tiere 30:43–174.Google Scholar
Kühn, A. 1913. Entwicklungsgeschichte und Verwandtschafts-beziehungen der Hydrozoen. I. Teil: Die Hydroiden. Ergebnisse und Fortschritte Zoology 4:1–284.Google Scholar
Lameere, A. 1919. Contribution à la connaissance des Dicyémides. Bulletin Biologique de la France et de la Belgique 53:234–275.Google Scholar
McConnaughey, B. H. 1951. The life cycle of the dicyemid mesozoa. University of California Publications in Zoology 55:295–336.Google Scholar
Malaquin, A. 1925. La ségrégation, au cours de l'ontogenèse, de deux cellules sexuelles promordiales, souches de la lignée germinale, chez Salmacina dysteri (Huxley). Comptes Rendus Academie des Science, Paris 180:324–327.Google Scholar
Malaquin, A. 1934. Nouvelles observations sur la lignée germinale de l'annelide Salmacina dysteri (Huxley). Comptes Rendus Academie des Science, Paris 198:1804–1806.Google Scholar
Mann, R. H. 1961. Leeches (Hirudinea). Pergamon Press; New York. 201 pp.Google Scholar
Manton, S. M. 1928. On the embryology of a mysid crustacean, Hemimysis lamornae. Philosophical Transactions of the Royal Society, London B216:363–463.Google Scholar
Manton, S. M. 1934. On the embryology of the crustacean Nebalia bipes. Philosophical Transactions of the Royal Society, London B223:168–238.Google Scholar
Manton, S. M. 1949. Studies on the Onychophora. VII. The early embryonic stages of Peripatopsis, and some general considerations concerning the morphology and phylogeny of the Arthropoda. Philosophical Transactions of the Royal Society, London B233:483–580.Google Scholar
Manton, S. M. 1964. Mandibular mechanisms and the evolution of Arthropods. Philosophical Transactions of the Royal Society, London B247:5–183.Google Scholar
Marcus, E. 1928. Zur Embryologie der Tardigraden. Verhandlungen der Deutschen Zooloologischen Gesessellschaft 32:134–146.Google Scholar
Marcus, E. 1929. Zur Embryologie der Tardigraden. Zoologische Jahrbucher, Abteilung Anatomie und Ontogenie der Tiere 50:333–384.Google Scholar
Marthy, H. J. 1968. Die organogenese des coelomsystems von Octopus vulgaris Lam. Revue Suisse de Zoologie 75:723–763.CrossRefGoogle ScholarPubMed
Melander, Y. 1963. Cytogenic aspects of embryogenesis in Paludicola, Tricladia. Hereditas 49:119–166.CrossRefGoogle Scholar
Meyer, A. 1931. Cytologische Studien über die Gonoblasten und andere änliche Zellen in der Entwicklung von Tubifex. Zeitschrift für Morphologie und Okologie der Tiere 22:269–86.Google Scholar
Miya, K. 1958. Studies on the embryonic development of the gonad in the silkworm Bombyx mori L. 1. Differentiation of germ cells. Journal of the Faculty of Agriculture, Iwate University 3:436–467.Google Scholar
Montalenti, G. and Vitagliano, G. 1946. Ricerche sul differenziamento dei sessi negli embrioni di Sepia officinalis. Pubblicazioni delle Statione Zoologica di Napoli 20:1–18.Google Scholar
Moritz, M. 1957. Zur Embryonalentwicklung der Phalanfiiden (Opiliones, Palpatores) unter besonderer Berücksichtigung der ausseren Morphologie, der Bildung des Mitteldarmes und der Genitalanlage. Zoologische Jahrbucher, Abteilung Anatomie und Ontogenie der Tiere 76:331–370.Google Scholar
Nachtwey, R. 1925. Untersuchungen über die Keimbahn, Organogenese und Anatomie von Asplanchna priodonta Gosse. Zeitschrift für Wissenschaftliche Zoologie 126:239–492.Google Scholar
Nelson, O. E. 1934. The segregation of the germ cells in the grasshopper, Melanoplus differentialis (Acrillidae, Orthoptera). Journal of Morphology 55:545–575.CrossRefGoogle Scholar
Nieuwkoop, P. D. and Sutasurya, L. A. 1979. Primordial Germ Cells in the Chordates. Cambridge University Press; Cambridge. 187 pp.Google Scholar
Nieuwkoop, P. D. and Sutasurya, L. A. 1981. Primordial Germ Cells in the Invertebrates. Cambridge University Press; Cambridge. 258 pp.Google Scholar
Nouvel, H. 1947. Les dicyémides. 1re partie: systematique, generations vermiformes, infusorigène et sexualité. Archives de Biologie (Paris) 58:59–230.Google Scholar
Nouvel, H. 1948. Les dicyémides. 2e partie: infusoriforme, teratologie, specificité du parasitisme, affinités. Archives de Biologie (Paris) 59:147–223.Google ScholarPubMed
Otto, H. and Tonniges, C. 1906. Untersuchungen über die Entwicklung von Paludina vivipara. Zeitschrift für Wissenschaftliche Zoologie 80:411–514.Google Scholar
Pearse, V., Pearse, J., Buchsbaum, M., and Buchsbaum, R. 1987. Living Invertebrates. Blackwell Scientific; Palo Alto, California. 572 pp.Google Scholar
Philiptschenko, J. 1912a. Beiträge zur Kenntnis der Apterygoten. III. Die Embryonalentwicklung von Isotoma cinerea Nic. Zeitschrift Für Wissenschaftliche Zoologie 103:519–660.Google Scholar
Philiptschenko, J. 1912b. Zur Kenntnis der Aptergotenembryologie. Zoologischer Anzeiger 39:43–49.Google Scholar
Pieper, S. M. B. 1953. The life history and germ cell cycle of Spirorchis artericola (Ward, 1921). Journal of Parasitology 39:310–325.CrossRefGoogle Scholar
Pray, F. A. 1965. Early development of the rotifer Monostyla. Transactions of the American Microscopic Society 84:210–216.CrossRefGoogle Scholar
Raup, D. M. 1977. Stochastic models in evolutionary paleontology. Pp. 59–78. In Hallam, A. (ed.), Patterns of Evolution as Illustrated by the Fossil Record. Elsevier; Amsterdam.CrossRefGoogle Scholar
Raup, D. M. 1981. Extinction: bad genes or bad luck? Acta Geologica Hispanica 16:25–33.Google Scholar
Raup, D. M. 1985. Mathematical models of cladogenesis. Paleobiology 11:42–52.CrossRefGoogle Scholar
Raup, D. M. and Gould, S. J. 1974. Stochastic simulation and the evolution of morphology—towards a nomothetic paleontology. Systematic Zoology 23:305–322.CrossRefGoogle Scholar
Raup, D. M., Gould, S. J., Schopf, T. J. M., and Simberloff, D. S. 1973. Stochastic models of phylogeny and the evolution of diversity. Journal of Geology 81:525–542.CrossRefGoogle Scholar
Rees, G. 1940. Studies on the germ cell cycle of the digenetic trematode Parorchis acanthus Nicoll. Part II. Structure of the miracidium and germinal development in the larval stages. Parasitology 32:372–391.Google Scholar
Ryland, J. S. 1970. Bryozoans. Hutchinson University Library; London. 175 pp.Google Scholar
Sastry, A. N. 1979. Pelecypoda (excluding Ostreidae). Pp. 113–292. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction of Marine Invertebrates., vol. V: Molluscs: Pelecypods and Lesser Classes. Academic Press; New York.Google Scholar
Scheltema, R. 1977. Dispersal of marine invertebrate organisms: paleobiographic and biostratigraphic implications. Pp. 73–108. In Kauffman, E. G., and Hazel, J. E. (eds.), Concepts and Methods of Biostratigraphy. Dowdem, Hutchinson, and Ross; Stroudsborg, Pennsylvannia.Google Scholar
Schroeder, P. C. and Hermans, C. O. 1975. Annelida: Polychaeta. Pp. 1–214. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction of Marine Invertebrates, vol. III: Annelids and Echiurans. Academic Press; New York.Google Scholar
Seidel, F. 1924. Die Geschlechtsorgane in der Embryonalen Entwicklung von Pyrrhocoris apterus L. Morphologie und Ökologie der Tiere 1:429–506.CrossRefGoogle Scholar
Sharov, A. G. 1966. Basic Arthropod Stock. Pergamon Press; Oxford. 271 pp.Google Scholar
Simpkins, C. J. 1924. Origin of the germ cells in Ecteinascidia. Journal of Morphology 39:295–321.CrossRefGoogle Scholar
Simpson, G. G. 1953. The Major Features of Evolution. Columbia University Press; New York. 434 pp.CrossRefGoogle Scholar
Stanley, S. M., Signor, P. W. III, Lidgard, S., and Karr, A. F. 1981. Natural clades differ from “random” clades: simulations and analyses. Paleobiology 7:115–127.CrossRefGoogle Scholar
Stéphan-Dubois, F. 1964. La lignée germinale des Turbellariés et des Annélides dans l'évolution normale et la régénération. Pp. 115–136. In Wolff, E. (ed.), La Lignée Germinale chez les Vertébrés et chez quelques Groups d'Invertébrés. Hermann; Paris.Google Scholar
Stéphan-Dubois, F. 1978. Absence ou présence de néoblastes dans la région blessée en cas de suppression de segments antérieurs, chez l'annélide oligochète Tubifex tubifex Müller. Comptes Rendus Academie des Science, Paris 287:33–35.Google Scholar
Stephenson, J. 1930. The Oligochaeta. Clarendon Press; Oxford. 978 pp.Google Scholar
Stevens, N. M. 1910. Further studies on reproduction in Sagitta. Journal of Morphology 21:279–319.CrossRefGoogle Scholar
Strathmann, R. R. and Slatkin, M. 1983. The improbability of animal phyla with few species. Paleobiology 9:97–106.CrossRefGoogle Scholar
Sulgostowska, T. 1972. The development of organ systems in cestodes. I. A study of histology of Hymenolepis diminuta (Rudolphi, 1819) (Hymenolepididae). Acta Parasitologica Polonica 20:449–462.Google Scholar
Tadano, M. 1968. Nemathelminthes. Pp. 159–191. In Kumé, M., and Dan, K. (eds.), Invertebrate Embryology. Nolit; Belgrade.Google Scholar
Tannreuther, G. 1920. Development of Asplanchna ebbesborneii. Journal of Morphology 33:389–437.CrossRefGoogle Scholar
Thompson, T. E. 1962. Studies on the ontogeny of Tritonia hombergi Cuvier. (Gastropoda: Opisthobranchia). Philosophical Transactions of the Royal Society, London B245:171–278.Google Scholar
Tiegs, O. W. and Manton, S. M. 1958. The evolution of the Arthropoda. Biological Review 33:255–337.CrossRefGoogle Scholar
Tucker, G. H. 1942. The histology of the gonads and development of the egg envelopes of an ascidian (Styela plicata Lesueur). Journal of Morphology 70:81–113.CrossRefGoogle Scholar
Tuzet, O. 1964. L'origine de la lignée germinale et la gametogénèse chez les spongiaires. Pp. 79–111. In Wolff, E. (ed.), L'Origine de la Lignée Germinale chez les Vertébrés et Quelques Groupes d'Invertébrés. Hermann; Paris.Google Scholar
Tuzet, O., Garrone, R., and Pavans de Ceccatty, M. 1970. Origine choanocytaire de la lignée germinale mâle chez démosponge Aplysilla rosea Schulze (Dendroceratides). Comptes Rendus Academie des Science, Paris 270:955–957.Google Scholar
Vacelet, J. 1964. Étude monographique de l'éponge calcaire pharetronide de Méditéranée Petrobiona massiliana Vacelet et Lévi. Les pharetronides actuelles et fossiles. Recueils de Travauy de la Station Marine d'Endoume 50:1–125.Google Scholar
Valentine, J. W., ed. 1985. Phanerozoic Diversity Patterns. Princeton University Press; New Jersey. 441 pp.Google Scholar
Van Beneden, E. and Julian, C. 1886. Recherches sur la morphologie des Tuniciers. Archives de Biologie (Paris) 6:237–476.Google Scholar
Vandel, A. 1921. Recherches expérimentales sur les modes de reproduction des planaires Triclades paludicoles. Bulletin Biologique de la France et de la Belgique 55:343–518.Google Scholar
Van der Woude, D. 1954. Germ cell cycle of Megalodiscus temperatus (Stafford, 1905) Harwood 1932 (Paramphistomidae: Trematoda). American Midland Naturalist 51:172–202.CrossRefGoogle Scholar
van Tiehoven, A. 1968. Reproductive Physiology of Vertebrates. W. B. Saunders; Philadelphia. 498 pp.Google Scholar
Vannini, E. and Stagni, A. 1959. Nuove indagini sull'origine ed il differenziamento delle cellule germinale nel Polichete ermarodite Spirorbis pagenstecheri. Rendiconti dell' Accademia Nazionale Lincei 26:259–265.Google Scholar
Vermeij, G. J. 1978. Biogeography and Adaptation. Harvard University Press: Cambridge. 332 pp.Google Scholar
von Erlanger, R. 1891. Zur Entwicklung von Paludina vivipara (Vorläufige Mittheilung). Zoologischer Anzeiger 14:280–283.Google Scholar
Vrba, E. S. 1983. Macroevolutionary trends: new perspectives on the roles of adaptation and incidental effect. Science 22:387–389.CrossRefGoogle Scholar
Vrba, E. S. 1984. What is species selection? Systematic Zoology 33:318–328.CrossRefGoogle Scholar
Vrba, E. S. and Eldredge, N. 1984. Individuals, hierarchies and processes: toward a more complete evolutionary theory. Paleobiology 10:146–171.CrossRefGoogle Scholar
Vrba, E. S. and Gould, S. J. 1986. The hierarchical expansion of sorting and selection: sorting and selection cannot be equated. Paleobiology 12:217–228.CrossRefGoogle Scholar
Webber, H. H. 1977. Gastropoda: Prosobranchia. Pp. 1–114. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction in Marine Invertebrates, vol. IV: Molluscs: Gastropods and Cephalopods. Academic Press; New York.Google Scholar
Weiler-Stolt, B. 1960. Über die Bedeutung der Interstitiellen Zellen für die Entwicklung und Fortpflanzung Mariner Hydroiden. Wilhelm Roux' Archiv Entwicklungsmechanik der Organismen 152:398–494.CrossRefGoogle Scholar
Weismann, A. 1883. Die Entstehung der Sexualzellen bei den Hydromedusen. Zugleich ein Beitrag zur Kenntnis des Baues und der Lebenserscheinungen dieser Gruppe. Fischer Verlag; Jena. 295 pp.Google Scholar
Weismann, A. 1892. Das Keimplasma. Eine Theorie der Vererbung. Fischer Verlag; Jena. 112 pp.Google Scholar
Wickstead, J. H. 1975. Chordata: Acrania (Cephalochordata). Pp. 283–319. In Giese, A. C., and Pearse, J. S. (eds.), Reproduction in Marine Invertebrates, vol. II: Entoprocts and Lesser Coelomates. Academic Press; New York.CrossRefGoogle Scholar
Woodland, J. T. 1957. A contribution to our knowledge of lepismatid development. Journal of Morphology 101:523–577.CrossRefGoogle Scholar
Zaffagnini, F. and Lucchi, M. L. 1970. Osservazioni ultrastrutturali sul determinante germinale dei Dafnidi. Rendiconti dell' Accademia Nazionale Lincei 49:141–146.Google Scholar