Specialised Cynodont Derivatives



Under this heading several lineages arising from the advanced cynodonts will be considered. These lines do not appear to have any close relationship to each other, but they all in some way transcend the typical cynodont level of evolution. All the lines eventually became extinct, and only one (the Haramiyidae), in our opinion, can be regarded as possible ancestors of any of the groups of mammals, although in some features they parallel the early mammals closely. Once again, with similar problems to be solved similar solutions were produced. The four lineages are:
  1. (1)


  2. (2)


  3. (3)


  4. (4)




Lower Jurassic Middle Jurassic Middle Triassic Zygomatic Arch Cheek Tooth 
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Copyright information

© Doris M. Kermack and Kenneth A. Kermack 1984

Authors and Affiliations

  1. 1.Department of Pure & Applied BiologyImperial CollegeLondonUK
  2. 2.Department of ZoologyUniversity College, LondonLondonUK

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