Anapsid

An anapsid is an amniote whose skull does not have openings on the sides behind the eyes.[1] This is

Anapsid
General diagram of the anapsid skull.

An anapsid is an amniote whose skull does not have openings on the sides behind the eyes.[1] This is

  1. A primitive ('basal') condition for early amniotes in the Mississippian (early Carboniferous).
  2. A secondary ('derived') condition of some other reptile groups, probably including turtles (Chelonia).

Some other groups were anapsids, such as the mesosaurs.

References

  1. ↑ Pough F.H. et al. 2002. Vertebrate life, 6th ed. Prentice Hall, NJ. ISBN 0130412481


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