Phylum Chordata

  • C. Mary Jenking
  • Ann Boyce
Chapter
Part of the Foundations of Biology book series

Abstract

Chordates first appeared in the Ordovician period some 450 million years ago. This phylum includes the familiar vertebrate classes and several less well-known invertebrate classes.

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Suggestions for futher reading

  1. Young, J. Z., The life of vertebrates, (Oxford University Press, 1962 ).CrossRefGoogle Scholar

Copyright information

© C. M. Jenking and A. Boyce 1979

Authors and Affiliations

  • C. Mary Jenking
    • 1
  • Ann Boyce
    • 2
  1. 1.Maynard SchoolExeterUK
  2. 2.Biology departmentMaynard SchoolExeterUK

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