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Sclerotic ring

Sclerotic rings are rings of bone found in the eyes of several groups of vertebrate animals, except for mammals and crocodilians.[1] They can be made up of single bones or small bones together.[2] They are believed to have a role in supporting the eye, especially in animals whose eyes are not spherical, or who live underwater.[1] Fossil sclerotic rings are known for a variety of extinct animals, including ichthyosaurs, pterosaurs, and dinosaurs,[3] but are often not preserved.

References

  1. ^ a b Motani, Ryosuke. Eyes. Retrieved on 2007-07-06.
  2. ^ Palaeos Vertebrates: Glossary S. Retrieved on 2007-07-06.
  3. ^ Pigdon, Dann. Re: Sclerotic ring in eyes. Retrieved on 2007-07-06.

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