Agapow, Paul-Michael, Bininda-Edmunds, O. R. P., Crandall, K. A., Gittleman, J. L., Mace, G. M., Marshall, J. C., and Purvis, A. (2004) “The Impact of Species Concept on Biodiversity Studies,” The Quarterly Review of Biology, vol. 79, no. 2, 161–179.CrossRefGoogle ScholarPubMed

Amundson, Ron, (1998) “Typology Reconsidered: Two Doctrines on the History of Evolutionary Biology,” Biology and Philosophy, 13: 153–177.CrossRefGoogle Scholar

Aristotle, , (1995) The Complete Works of Aristotle Vols. I and II, Barnes, J., ed., Princeton University Press.Google Scholar

Ashworth, E. J. (2003) “Language and Logic,” Cambridge Companion to Medieval Philosophy, McGrade, A. S., ed., Cambridge University Press, 73–96.Google Scholar

Balme, D. M. (1987a) “Aristotle's Biology was not Essentialistic,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 291–312.Google Scholar

(1987b) “Aristotle's Use of Division and Differentiae,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 69–89.CrossRef

(1987c) “The Place of Biology in Aristotle's Philosophy,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 9–20.CrossRef

Barker, Matthew J. (2007) “The Empirical Inadequacy of Species Cohesion by Gene Flow,” Philosophy of Science, 74: 654–665.CrossRefGoogle Scholar

Barnes, Jonathan (1995) “Life and Work,” The Cambridge Companion to Aristotle, Cambridge University Press, 1–26.Google Scholar

Beatty, John (1992) “Speaking of Species: Darwin's Strategy,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M. ed., Cambridge, MA: Bradford Books, 227–245.Google Scholar

Bird, Alexander (2000) Thomas Kuhn, Princeton University Press.Google Scholar

Bird, Alexander, and Tobin, Emma (2008) “Natural Kinds,” The Stanford Encyclopedia of Philosophy (Summer 2009 edn.), Zalta, Edward N. ed., http://plato.stanford.edu/archives/sum2009/entries/natural-kinds/

Blackburn, Simon (2002) “Metaphysics,” The Blackwell Companion to Philosophy, Bunnin, N and Tsui-James, E. P., eds., Malden, MA: Blackwell Publishers, 61–89.Google Scholar

Blumenthal, Henry J. (1990) “Neoplatonic Elements in the de Anima Commentaries,” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 305–324.Google Scholar

Blumenthal, Henry J. (1996) Aristotle and Neoplatonism in Late Antiquity: Interpretations of De AnimaIthaca, NY: Cornell University Press.Google Scholar

Boler, John F. (1963) “Abailard and the Problem of Universals,” Journal of the History of Philosophy 1 :104–126.CrossRefGoogle Scholar

Bolton, Robert (1987) “Definition and Scientific Method in Aristotle's Posterior Analytics and Generation of Animals,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 120–166.Google Scholar

Boyd, Richard (1999) “Homeostasis, Species, and Higher Taxa,” Species: New Interdisciplinary Essays, Wilson, Robert A., ed., Cambridge, MA: Massachusetts Institute of Technology Press, 141–185.Google Scholar

Brigandt, Ingo (2003) “Species Pluralism Does Not Imply Species Eliminativism,” Philosophy of Science, 70: 1305–1316.CrossRefGoogle Scholar

Broberg, Gunnar (1983) “Homo Sapiens: Linnaeus's Classification of Man,” Linnaeus the Man and His Work, Frängsmyr, T., ed., Berkeley, CA: University of California Press, 156–194.Google Scholar

Brogaard, Berit (2004) “Species as Individuals,” Biology and Philosophy, 19: 223–243.CrossRefGoogle Scholar

Brown, Stephen F. (1999) “Realism versus Nominalism,” The Columbia History of Western Philosophy, New York:Columbia University Press 271–278.Google Scholar

Burian, Richard M. (1985) “On Conceptual Change in Biology: The Case of the Gene,” Evolution at a Crossroads: The New Biology and the New Philosophy of Science,” Depew, D. J. and Weber, B. H., eds., Cambridge, MA: Massachusetts Institute of Technology Press, 21–42.Google Scholar

Burkhardt, Frederick and Smith, Sydney, eds. (1987) The Correspondence of Charles Darwin, vol. II. Cambridge University Press.

Burkhardt, Frederick and Smith, Sydney, (1990) The Correspondence of Charles Darwin, vol. VI. Cambridge University Press.

Cain, A. J. (1993) Animal Species and Their Evolution, Princeton University Press.CrossRefGoogle Scholar

Carnap, Rudolf (1966) An Introduction to the Philosophy of Science, Gardner, M., ed., New York:Basic Books.Google Scholar

Claridge, M. F., Dawah, H. A. and Wilson, M. R. (1997) “Practical Approaches to Species Concepts for Living Organisms,” Species: The Units of Biodiversity, Claridge, M. F., Dawah, H. A., Wilson, M. R., eds., London: Chapman and Hall, 1–15.Google Scholar

Cracraft, Joel (1992) “Species Concepts and Speciation Analysis,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M. ed., Cambridge, MA: Bradford Books, 93–120.Google Scholar

Cracraft, Joel (1997) “Species Concepts in Systematics and Conservation Biology – an Ornithological Viewpoint,” Species: The Units of Biodiversity, Claridge, M. F., Dawah, H.A., Wilson, M. R., eds., London: Chapman and Hall, 325–339.Google Scholar

Cracraft, Joel (2000) “Species Concepts in Theoretical and Applied Biology: A Systematic Debate with Consequences,” Species Concepts and Phylogenetic Theory, Quentin, Q. D. Wheeler and Meier, R. eds., New York:Columbia University Press, 3–14.Google Scholar

Darwin, Charles (1851) The Complete Works of Charles Darwin Online, University of Cambridge, http://darwin-online.org.uk/content/frameset?viewtype=text&itemID=F339.1&keywords=cirripedia&pageseq=1.

Darwin, Charles (1964) On the Origin of Species: A Facsimile of the First Edition, Cambridge, MA: Harvard University Press.Google Scholar

Queiroz, Kevin (1999) “The General Lineage Concept of Species and the Defining Properties of the Species Category,” Species: New Interdisciplinary Essays, Wilson, Robert A., ed., Cambridge, MA: Massachusetts Institute of Technology Press, 49–89.Google Scholar

Queiroz, Kevin (2005) “Ernst Mayr and the Modern Concept of Species,” Proceedings of the National Academy of Sciences, vol. CII, suppl. 1, 6600–6607.CrossRefGoogle Scholar

Vries, Hugo (1905) Species and Varieties, Their Origin and Mutation, Chicago, IL: Open Court Publishing.Google Scholar

Dennett, Daniel (1995) Darwin's Dangerous Idea, New York:Simon and Schuster.Google Scholar

Devitt, Michael (2008) “Resurrecting Biological Essentialism,” Philosophy of Science, vol. 75, no. 3, 344–382.CrossRefGoogle Scholar

Dobzhansky, Theodosius (1937) Genetics and the Origin of Species, New York: Columbia University Press.Google Scholar

Dupré, John (1993) The Disorder of Things: Philosophical Foundations for the Disunity of Science, Cambridge, MA: Harvard University Press.Google Scholar

Dupré, John (1999) “On the Impossibility of a Monistic Account of Species,” Species: New Interdisciplinary Essays, Wilson, Robert A., ed., Cambridge, MA: Massachusetts Institute of Technology Press, 3–19.Google Scholar

Ebbesen, Stan (1990a) “Boethius as an Aristotelian Commentator,” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 373–391.Google Scholar

Ebbeson, Stan (1990b) “Philoponus, Alexander and the Origins of Medieval Logic,” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 445–461.Google Scholar

Ebbeson, Stan (1990c) “Porphyry's Legacy to Logic: A Reconstruction,” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 141–179.Google Scholar

Eldredge, Niles (1995) “Species, Selection, and Paterson's Concept of the Specific-Mate Recognition System,” Speciation and the Recognition Concept, Baltimore, MD: The Johns Hopkins University Press, 464–477.Google Scholar

Eldredge, Niles, and Cracraft, Joel (1980) Phylogenetic Patterns and the Evolutionary ProcessNew York: Columbia University Press.Google Scholar

Ereshefsky, Marc (1992) “Species, Higher Taxa, and the Units of Evolution,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 381–398.Google Scholar

Ereshefsky, Marc (2001) The Poverty of the Linnaean Hierarchy: A Philosophical Study of biological Taxonomy, Cambridge University Press.CrossRefGoogle Scholar

Eriksson, Gunnar (1983) “Linnaeus the Botanist,” Linnaeus the Man and His WorkFrängsmyr, T., ed., Berkeley, CA: University of California Press, 63–109.Google Scholar

Falcon, Andrea (2005) “Commentators on Aristotle,” The Stanford Encyclopedia of Philosophy (Winter 2005 edn), Zalta, Edward N. ed., http://plato.stanford.edu/archives/fall2005/entries/aristotle-commentators/.

Frängsmyr, Tore, ed. (1983) Linnaeus, the Man and His WorkBerkeley, CA: University of California Press.

Frede, Dorothea (2009) “Alexander of Aphrodisias,” The Stanford Encyclopedia of Philosophy (Summer 2009 edn), Zalta, Edward N. ed., http://plato.stanford.edu/archives/sum2009/entries/alexander-aphrodisias/.

Frege, Gottlob (1990) “On Sense and Nominatum,” reprinted in The Philosophy of Language, Martinich, A.P., ed., Oxford University Press, 190–202.Google Scholar

Ghiselin, Michael, T. (1969) The Triumph of the Darwinian Method, University of Chicago Press.Google Scholar

Ghiselin, Michael T. (1989) “Individuality, History and the Laws of Nature in Biology,” What the Philosophy of Biology Is: Essays Dedicated to David Hull, Ruse, M., ed., Dordrect, The Netherlands: Kluwer Academic Publishers.Google Scholar

Ghiselin, Michael T. (1997) Metaphysics and the Origin of Species, Albany, NY: State University of New York Press.Google Scholar

Gopnik, Alison, and Meltzoff, Andrew N. (1997) Words, Thoughts, and Theories, Cambridge, MA: Massachusetts Institute of Technology Press.Google Scholar

Gotthelf, Allan (1987) “First Principles in Aristotle's Parts of Animals,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 167–198.CrossRefGoogle Scholar

Grene, Marjorie, and Depew, David (2004) The Philosophy of Biology: An Episodic HistoryCambridge University Press.CrossRefGoogle Scholar

Griffiths, Paul (1999) “Squaring the Circle, Natural Kinds with Historical Essences,” Species, New Interdisciplinary Essays, Wilson, Robert A., ed., Cambridge, MA: Massachusetts Institute of Technology Press, 209–228.Google Scholar

Hadot, Pierre (1990) “The Harmony of Plotinus and Aristotle According to Porphyry,” Aristotle Transformed, Sorabji, R., ed., Ithaca NY: Cornell University Press, 125–140.Google Scholar

Hankinson, R. J. (1994) “Galen and the Logic of Relations,” Aristotle in Late Antiquity, Schrenk, L., ed., Washington, DC: The Catholic University of America Press, 57–75.Google Scholar

Hennig, Willi (1977) Phylogenetic Systematics, Urbana, IL: University of Illinois Press.Google Scholar

Hey, Jody (2001) Genes, Categories and Species: the Evolutionary and Cognitive Causes of the Species Problem, Oxford University Press.Google Scholar

Hull, David L. (1983) Darwin and His Critics, University of Chicago Press.Google Scholar

Hull, David L. (1988) Science as Process: an Evolutionary Account of the Social and Conceptual Development of Science, University of Chicago Press.CrossRefGoogle Scholar

Hull, David L. (1989) The Metaphysics of Evolution, Albany, NY: State University of New York Press.Google Scholar

Hull, David L. (1992a) “The Effect of Essentialism on Taxonomy: Two Thousand Years of Stasis,” The Units of Evolution: Essays on the Nature of SpeciesEreshefsky, M., ed., Cambridge, MA: Bradford Books, 199–225.Google Scholar

Hull, David L. (1992b) “A Matter of Individuality,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 293–316.Google Scholar

Hull, David L. (1997). “The Ideal Species Concept – and Why We Can't Get It,” in Species: the Units of Biodiversity, Claridge, M. F., Dawah, H. A., Wilson, M. R., eds., London: Chapman and Hall, 357–380.Google Scholar

Hull, David L. (1999) “On the Plurality of Species: Questioning the Party Line,” Species: New Interdisciplinary EssaysWilson, Robert A., ed., Cambridge, MA: Massachusetts Institute of Technology Press, 23–48.Google Scholar

Hull, David L. (2001) Science and Selection: Essays on Biological Evolution and the Philosophy of Science, Cambridge University Press.Google Scholar

Huxley, Julian (1940) The New Systematics, LondonOxford University Press.Google Scholar

Hyman, Arthur and Walsh, James J. (1983) Philosophy in the Middle Ages, Indianapolis, IN: Hackett Publishing Company.Google Scholar

Jones, W. T. (1969) The Medieval MindSan Diego, CA.: Harcourt Brace Jovanovich.Google Scholar

Kitcher, Philip (1978) “Theories, Theorists and Theoretical Change,” Philosophical Review, 87: 519–547.CrossRefGoogle Scholar

Kitcher, Philip (1984) “Against the Monism of the Moment,” Philosophy of Science, vol. 51, no. 4. (December 8), 616–630.CrossRefGoogle Scholar

Kitcher, Philip (1992) “Species,” The Units of Evolution: Essays on the Nature of SpeciesEreshefsky, M., ed., Cambridge, MA: Bradford Books, 317–341.Google Scholar

Kitcher, Philip (1998) “Explanatory Unification,” Introductory Readings in the Philosophy of ScienceKlemke, E. D., Hollinger, R., Rudge, D. W., eds., Amherst, NY: Prometheus Books, 278–301.Google Scholar

Kitts, David R. and Kitts, David J. (1979) “Biological Species as Natural Kinds,” Philosophy of Science, vol. 46, no. 4, 613–622.CrossRefGoogle Scholar

Klima, Gyula (2003) “Natures: The Problem of Universals,” Cambridge Companion to Medieval Philosophy, McGrade, A. S., ed., Cambridge University Press, 196–207.Google Scholar

Kripke, Saul (1972) Naming and Necessity, Cambridge, MA: Harvard University Press.CrossRefGoogle Scholar

Kuhn, Thomas (1977) The Essential Tension, The University of Chicago Press.Google Scholar

Kuhn, Thomas (1996) The Structure of Scientific Revolutions, 3rd ednThe University of Chicago Press.CrossRefGoogle Scholar

LaPorte, Joseph, (2004) Natural Kinds and Conceptual Change, Cambridge University Press.Google Scholar

Larson, James L. (1968) “The Species Concept of Linnaeus,” Isis, vol. 59, no. 3, 291–299.CrossRefGoogle Scholar

Larson, James L. (1971) Reason and Experience: The Representation of Natural Order in the Work of Carl von LinneBerkeley, CA: University of California Press.Google Scholar

Lauden, Larry (1984) Science and Values: The Aims of Science and Their Role in Scientific Debate, Berkeley, CA: University of California Press.Google Scholar

Lennox, James (1980) “Aristotle on Genera, Species and the More and the Less,” Journal of the History of Biology, 13, 321–346.CrossRefGoogle Scholar

Lennox, James (1987a) “Divide and Explain: The Posterior Analytics in Practice,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 90–119.Google Scholar

(1987b) “Kinds, Forms of Kinds and the More and Less in Aristotle's Biology,” Philosophical Issues in Aristotle's Biology, Gotthelf, and Lennox, , eds., Cambridge University Press, 339–359.CrossRef

(2006) “Aristotle's Biology,” The Stanford Encyclopedia of Philosophy (Fall 2006 edn), Zalta, Edward N., ed., http://plato.stanford.edu/archives/fall2006/entries/aristotle-biology/.

Lewis, David (1983), “Extrinsic Properties,” Philosophical Studies, 44: 197–200.CrossRefGoogle Scholar

Lindroth, Sten (1983) “The Two Faces of Linnaeus,” Linnaeus the Man and His Work, Frängsmyr, T., ed., Berkeley, CA: University of California Press, 1–62.Google Scholar

Linnaeus, Carolus (1964) Systema Naturae, Facsimile of the First EditionEngel-Ledeboer, M. J. S. and Engel, H., eds., Nieuwkoop, Netherlands: B. De Graaf. Publ.Google Scholar

Lovejoy, Arthur O. (1968) “Buffon and the Problem of Species,” Forerunners of Darwin, Baltimore, MD: Johns Hopkins University Press, 84–113.Google Scholar

Lyell, Charles (1997) Principles of Geology, LondonPenguin Books.Google Scholar

MacLaurin, James and Sterelny, Kim (2008) What is Biodiversity?, University of Chicago Press.CrossRefGoogle Scholar

Madigan, Arthur S. J. (1994) “Alexander on Aristotle's Species and Genera as Principles,” Aristotle in Late Antiquity, Schrenk, L., ed., Washington DC: The Catholic University of America Press, 76–91.Google Scholar

Magnello, M. Eileen (1996) “Karl Pearson's Gresham Lectures: W. F. R. Weldon, Speciation and the Origin of Pearsonian Statistics,” British Journal for the History of Science vol. 29, no. 1 (March), 43–63.CrossRefGoogle Scholar

Mallet, James (1995) “A Species Definition for the Modern Synthesis,”Trends in Ecology and Evolution, vol. 10, no. 7, 294–299.CrossRefGoogle Scholar

Marenbon, John (2005) “Anicius Manlius Severinus Boethius,” The Stanford Encyclopedia of Philosophy (Fall 2008 edn), Zalta, Edward N., ed., http://plato.stanford.edu/archives/fall2008/entries/boethius/.

Margolis, Eric and Laurence, Stephen (2006) “Concepts,” The Stanford Encyclopedia of Philosophy (Spring 2007 edn), Zalta, Edward N., ed., http://plato.stanford.edu/archives/spr2007/entries/concepts/.

Marrone, Steven P. (2003) “Medieval Philosophy in Context,” Cambridge Companion to Medieval PhilosophyMcGrade, A. S., ed., Cambridge University Press, 10–50.Google Scholar

Mayden, Richard L. (1997) “A Hierarchy of Species Concepts: The Denouement in the Saga of the Species Problem,” Species: The Units of Biodiversity, Claridge, M. F., Dawah, H. A., Wilson, M. R., eds., London: Chapman and Hall, 381–424.Google Scholar

Mayden, Richard L. (1999) “Consilience and a Hierarchy of Species Concepts: Advances Toward Closure on the Species Puzzle,” Journal of Nematology, vol. 31, no. 2, 95–116.Google Scholar

Mayr, Ernst (1942) Systematics and the Origin of Species, New York: Columbia University Press.Google Scholar

Mayr, Ernst (1957a) “Difficulties and Importance of the Biological Species,” The Species Problem, Mayr, , ed. Washington, DC: American Association for the Advancement of Science, 371–388.Google Scholar

Mayr, Ernst (1957b) “Species Concepts and Definitions,” The Species ProblemMayr, , ed. Washington, DC: American Association for the Advancement of Science, 1–22.Google Scholar

Mayr, Ernst (1982) The Growth of Biological Thought, Cambridge, MA, Belknap Press.Google Scholar

Mayr, Ernst (1992) “Species Concepts and Their Application,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 15–25.Google Scholar

Mayr, Ernst (2000) “The Biological Species Concept,” Species Concepts and Phylogenetic Theory, Wheeler, Q. D., Quentin and Meier, R., eds., New York: Columbia University Press, 17–29.Google Scholar

Mayr, Ernst and Ashlock, Peter D. (1991) Principles of Systematic Zoology, New York: McGraw-Hill.Google Scholar

Mellor, D. H. (1977) “Natural Kinds,” The British Journal for the Philosophy of Science, vol. 28, no. 4, 299–312.CrossRefGoogle Scholar

Mellor, D. H. and Oliver, Alex (1997) Properties, Oxford University Press.Google Scholar

Mishler, Brent D. and Brandon, Robert (1987) “Individuality, Pluralism, and the Phylogenetic Species Concept”, Biology and Philosophy, 2: 397–414.CrossRefGoogle Scholar

Mishler, Brent D. and Donoghue, Michael (1992) “Species Concepts: A Case for Pluralism,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 121–137.Google Scholar

Mishler, Brent D., and Theriot, Edward C. (2000) “The Phylogenetic Species Concept (sensu Mishler and Theriot): Monophyly, Apomorphy and the Phylogenetic Species Concept,” Species Concepts and Phylogenetic TheoryWheeler, Q. D., Quentin and Meier, R., eds., New York: Columbia University Press, 44–54.Google Scholar

Mueller, Ian “Aristotle's Doctrine of Abstraction in the Commentators,” Aristotle Transformed, Sorabji, R., ed., Ithaca NY: Cornell University Press, 463–480.

Murphy, Gregory L., and Medin, Douglas L. (1985) “The Role of Theories in Conceptual Coherence,” Psychological Review, vol. 92, no. 3 (July 1985), 289–316.CrossRefGoogle ScholarPubMed

,National Research Council Committee on Scientific Issues in the Endangered Species Act (1995) Science and the Endangered Species ActWashington, DC: National Academies Press.Google Scholar

Newton-Smith, W. H. (1994) The Rationality of Science, London: Routledge Press.Google Scholar

Niklas, Karl J. (1997) The Evolutionary Biology of Plants, University of Chicago Press.Google Scholar

Ogilvie, Brian W. (2006) The Science of Describing: Natural History in Renaissance Europe, University of Chicago Press.CrossRefGoogle Scholar

Panchen, Alec L. (1992) Classification, Evolution, and the Nature of Biology, Cambridge University Press.CrossRefGoogle Scholar

Paterson, Hugh (1992) “The Recognition Concepts of Species,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 139–158.Google Scholar

Paterson, Hugh (1993) Evolution and the Recognition Concept of Species, Collected Writings of H. E. H. Paterson, McEvey, S. F., ed., Baltimore, MD: Johns Hopkins University Press.Google Scholar

Peacocke, Christopher (1992) A Study of Concepts, Cambridge, MA: Massachusetts Institute of Technology Press.Google Scholar

Pellegrin, Pierre (1987) “Logical Difference and Biological Difference: The Unity of Aristotle's Thought,” Philosophical Issues in Aristotle's Biology, Gotthelf, A. and Lennox, J. G., eds., Cambridge University Press, 313–338.Google Scholar

Peters, F. E. (1967) Greek Philosophical Terms: A Historical Lexicon, New York University Press.Google Scholar

Purvis, O. W. (1997) “The Species Concept in Lichens,” Species: The Units of Biodiversity, Claridge, M. F., Dawah, H.A., Wilson, M. R., eds., London: Chapman and Hall, 109–134.Google Scholar

Putnam, Hilary (1990) “Meaning and Reference,” reprinted in The Philosophy of Language 2nd edn, Martinich, A., ed., New York: Oxford University Press, 308–315.Google Scholar

Quine, W. V. O. (1976) The Ways of Paradox and Other Essays, Cambridge, MA: Harvard University Press.Google Scholar

Quine, W. V. O. (1990) “Two Dogmas of Empiricism,” reprinted in The Philosophy of Language, 2nd edn, Martinich, A., ed., New York: Oxford University Press, 26–39.Google Scholar

Ray, John (1735) The Wisdom of God Manifested in the Works of Creation 10th edn, London: William Innys and Richard Manby.CrossRefGoogle Scholar

Reydon, Thomas A. C. (2003) “Discussion: Species Are Individuals – Or Are They?”, Philosophy of Science, 70: 49–56.CrossRefGoogle Scholar

Richards, Janet Radcliffe (2000) Human Nature after Darwin, London: Routledge.Google Scholar

Richards, Richard A. (2002) “Kuhnian Values and Cladistic Parsimony,” Perspectives on Science, vol. 10, no. 1, 1–27.CrossRefGoogle Scholar

Richards, Richard A. (2003) “Character Individuation in Phylogenetic Inference,” Philosophy of Science, 70, 264–279.CrossRefGoogle Scholar

Richards, Richard A. (2005) “Evolutionary Naturalism and the Logical Structure of Valuation: The Other Side of Error Theory,” Cosmos and History: The Journal of Natural and Social, vol. 1, no. 2, 270–294.Google Scholar

Richards, Richard A. (2007a) “Solving the Species Problem: Kitcher and Hull on Sets and Individuals,” Philosophy of Biology, Michael Ruse. ed., Amherst, NY: Prometheus Books.Google Scholar

Richards, Richard A. (2007b) “The Species Problem: A Philosophical Analysis,” The Encyclopedia of Life Sciences, Chichester: John Wiley.Google Scholar

Richards, Richard A. (2008) “Species and Taxonomy,” Oxford Handbook of the Philosophy of Biology, Oxford University Press.Google Scholar

Ruse, Michael (1987) “Biological Species: Natural Kinds, Individuals or What?” The British Journal for the Philosophy of Science, vol. 38, no. 2, 225–242.CrossRefGoogle Scholar

Ruse, Michael (1992) “Biological Species: Natural Kinds, Individuals, or What?”, The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 343–361.Google Scholar

Ruse, Michael (1999) The Darwinian Revolution, University of Chicago Press.Google Scholar

Ruse, Michael (1998) Taking Darwin Seriously: A Naturalistic Approach to Philosophy, Amherst, NY: Prometheus Books.Google Scholar

Sharples, Robert W. (1990) “The School of Alexander?” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 83–111.Google Scholar

Shiel, James (1990) “Boethius' Commentaries on Aristotle,” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 349–372.Google Scholar

Simpson, George Gaylord (1951) “The Species Concept,” Evolution, vol. 5, no. 4, 285–298.CrossRefGoogle Scholar

Simpson, George Gaylord (1961) Principles of Animal TaxonomyNew York: Columbia University Press.Google Scholar

Sloan, Philip R. (1976) “The Buffon-Linnaeus Controversy,” Isis, vol. 67, no. 3, 356–375.CrossRefGoogle ScholarPubMed

Sloan, Philip R. (1979), “Buffon, German Biology, and the Historical Interpretation of Biological Species,” The British Journal for the History of Science, vol. 12, no. 2, 109–153.CrossRefGoogle Scholar

Sloan, Philip R. (1985) “From Logical Universals to Historical Individuals,” Histoire du Concept d'Espèce dans les Sciences de la Vie, Paris: Fondation Singer-Polignac.Google Scholar

Sloan, Philip R. (2003) “Reflections on the Species Problem,” The Philosophy of Marjorie Grene, Auxier, R. and Hahn, L. E., eds., Chicago, IL.: Open Court.Google Scholar

Slobodchikoff, C. N. (1976) Concepts of SpeciesStroudsberg, PA: Dowden, Hutchinson and Ross.Google Scholar

Sneath, P. H. A., and Sokal, Robert R. (1973) Numerical Taxonomy, San Francisco, CA: W. H. Freeman.Google Scholar

Soames, Scott (2005) Reference and Description: The Case against Two-Dimensionalism, Princeton University Press.Google Scholar

Sober, Elliott (1980) “Evolution, Population Thinking, and Essentialism,” Philosophy of Science, vol. 47, no. 3, 350–383.CrossRefGoogle Scholar

Sober, Elliott (1984) “Sets, Species and Evolution: Comments on Philip Kitcher's ‘Species’,” Philosophy of Science, vol. 51, no. 2, 334–341.CrossRefGoogle Scholar

Sober, Elliott (1992) “Evolution, Population Thinking, and Essentialism,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M. ed., Cambridge, MA: Bradford Books, 247–278.Google Scholar

Sober, Elliott (2000) Philosophy of Biology, 2nd ednBoulder, CO: Westview Press.Google Scholar

Sorabji, Richard (1990) “The Ancient Commentators on Aristotle,” Aristotle Transformed, Sorabji, R., ed., Ithaca, NY: Cornell University Press, 1–30.Google Scholar

Spade, Paul Vincent (2008) “William of Ockham,” The Stanford Encyclopedia of Philosophy (Fall 2008edn), Zalta, Edward N. ed., http://plato.stanford.edu/archives/fall2008/entries/ockham/.

Stafleu, Frans A. (1971) Linnaeus and the Linnaeans, Utrecht, Netherlands: A. Oosthooek's Uitgeversmaatschappij.Google Scholar

Stamos, David, (2003) The Species Problem, Lanhan, MD: Lexington Books.Google Scholar

Stamos, David, (2007) Darwin and the Nature of Species, Albany, NY: SUNY Press.Google Scholar

Stauffer, Robert C. (1975) Charles Darwin's Natural Selection, Cambridge University Press.Google Scholar

Stott, Rebecca (2003) Darwin and the BarnacleNew York: W. W. Norton and Company.Google Scholar

Templeton, Alan (1992) “The Meaning of Species and Speciation: A Genetic Perspective,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 159–183.Google Scholar

Thompson, Augustine (1995) “The Debate on Universals Before Peter Abelard,” The Journal of the History of Philosophy, vol. 33, no. 3, 409–429.CrossRefGoogle Scholar

Valen, Leigh (1992) “Ecological Species, Multispecies, and Oaks,” The Units of Evolution: Essays on the Nature of Species, Ereshefsky, M., ed., Cambridge, MA: Bradford Books, 69–77.Google Scholar

Wheeler, Quentin D. and Platnick, Norman I. (2000) “The Phylogenetic Species Concept (sensu Wheeler and Platnick),” Species Concepts and Phylogenetic Theory, Wheeler, Q. D., Quentin and Meier, R. eds., New York: Columbia University Press, 55–69.Google Scholar

Whewell, William (1984) Selected Writings on the History of Science, University of Chicago Press.Google Scholar

Whewell, William (1989) Theory of Scientific MethodButts, R. E., ed., Indianapolis, IN.: Hackett Publishing.Google Scholar

Wiley, E. O. (1981) Phylogenetics: The Theory and Practice of Phylogenetic Systematics, New York: John Wiley and Sons.Google Scholar

Wiley, E. O., and Mayden, Richard L. (2000) “The Evolutionary Species Concept,” Species Concepts and Phylogenetic Theory, Wheeler, Q. D., Quentin and Meier, R., eds., New York: Columbia University Press, 70–89.Google Scholar

Williams, Mary B. (1989) “Evolvers are Individuals: Extension of the Species as Individuals Claim,” What the Philosophy of Biology Is: Essays dedicated to David Hull, Ruse, M., ed., Dordrect, The Netherlands: Kluwer Academic Publishers, 301–308.Google Scholar

Wilson, Edward O. (2000) Sociobiology: The New Synthesis, Cambridge, MA: Harvard University Press.Google Scholar

Wilson, Leonard G. (1970) Sir Charles Lyell's Scientific Journals on the Species Question, New Haven, CT: Yale University Press.Google Scholar

Wilson, Robert A. (1999) “Realism, Essence, and Kind: Resuscitating Species Essentialism?” Species: New Interdisciplinary Essays, Wilson, Robert A., ed., Cambridge, MA: Massachusetts Institute of Technology Press, 187–207.Google Scholar

Winsor, Mary (2003) “Non-essentialist Methods in Pre-Darwinian Taxonomy,” Biology and Philosophy, 18: 387–400.CrossRefGoogle Scholar

Winsor, Mary (2006a) “The Creation of the Essentialism Story: An Exercise in Metahistory,” History and Philosophy of the Life Sciences, 28, 149–174.Google ScholarPubMed

Winsor, Mary (2006b) “Linnaeus's Biology was not Essentialist,” Annuals of the Missouri Botanical Garden, 93: 2–7.CrossRefGoogle Scholar

Wittgenstein, Ludwig (1968) Philosophical Investigations, New York: MacMillan Publishing Co.Google Scholar

Zimmer, Carl (2008) “What Is a Species,” Scientific American (June), 72–79.CrossRef

Zirkle, Conway (1959) “Species Before Dawin,” Proceedings of the American Philosophical Society, vol. 103, no. 5, 636–644.Google Scholar