chordate: References & Edit History

Additional Reading

E.J.W. Barrington, The Biology of Hemichordata and Protochordata (1965), is an account of the lower chordates and their evolution; N.J. Berrill, The Origin of Vertebrates (1955), argues the thesis that the urochordate larva represents the prototype from which cephalochordates and vertebrates are derived; A. Willey, Amphioxus and the Ancestry of the Vertebrates (1894), an early but good comprehensive account, presents the orthodox theory of chordate relationships; R.P.S. Jefferies, The Ancestry of the Vertebrates (1986), expounds an alternate theory of chordate origin; and Libbie H. Hyman, The Invertebrates, vol. 5, Smaller Coelomate Groups (1959), is a classic work treating the hemichordates in extensive detail. Later works include Charles K. Weichert and William Presch, Elements of Chordate Anatomy, 4th ed. (1975); and R. McNeill Alexander, The Chordates, 2nd ed. (1981); supplemented by Brian Bracegirdle and Patricia H. Miles, An Atlas of Chordate Structure (1978).

N.J. Berrill, The Tunicata with an Account of the British Species (1950, reprinted 1968), a taxonomic survey with a useful section on tunicate biology; Pierre P. Grasse (ed.), Traité de zoologie: anatomie, systématique, biologie, vol. 11, Echinodermes, stomocordés, procordés (1966), an advanced zoological treatise devoted to protochordates, with good illustrations; W.A. Herdman, “Tunicata (Ascidians and Their Allies)” and “Cephalochordata,” in The Cambridge Natural History, vol. 7, pp. 35–138 (1904), an important general account; R.N. Millar, The Marine Fauna of New Zealand: Ascidiacea (1982), a morphological account of a single species of ascidian; Willard G. Van Name, “The North and South American Ascidians,” Bulletin of the American Museum of Natural History, vol. 84 (1945). For a later treatment, see “Invertebrate Chordates: Tunicates and Lancelets,” in Vicki Pearse et al., Living Invertebrates (1987).

Michael T. Ghiselin

Article History

Type Description Contributor Date
Modified link of Web site: Openstax - Biology 2e - Chordate. Dec 20, 2024
Add new Web site: Cell Press - Current Biology - Chordates. Sep 11, 2024
Add new Web site: PNAS - Biological Sciences - Evolution of the chordate body plan: New insights from phylogenetic analyses of deuterostome phyla. Jul 31, 2024
Add new Web site: LOUIS Pressbooks - Biology Part II - Chordates. Mar 29, 2024
Add new Web site: Khan Academy - Chordates. Feb 15, 2024
Add new Web site: UEN Digital Pressbooks - Biology and the Citizen - Echinoderms and Chordates. Feb 09, 2024
Add new Web site: The University of Hawaiʻi Pressbooks - Biology - Chordates. Dec 04, 2023
Add new Web site: The Royal Society Publishing - The origin and evolution of chordate nervous systems. Oct 08, 2023
Add new Web site: National Center for Biotechnology Information - PubMed Central - Chordate evolution and the three-phylum system. Mar 28, 2023
Add new Web site: University of Hawaiʻi at Mānoa - Exploring Our Fluid Earth - Phylum Chordata. Jan 05, 2023
Add new Web site: Openstax - Biology 2e - Chordate. Aug 26, 2022
Article revised and updated. Aug 30, 2018
New text identifying the world's oldest known fossil chordate as Pikaia gracilens added. Mar 30, 2012
Media added. Jun 11, 2010
Added new Web site: The Natural History Collections of the University of Edinburgh - Invertebrate Members of the Phylum Chordata. Jun 16, 2008
Added new Web site: University of California Museum of Paleontology - Introduction to the Vertebrates. Jun 26, 2006
Added new Web site: University of California Museum of Paleontology - Introduction to the Vertebrates. Jun 26, 2006
Article added to new online database. Aug 23, 1998
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