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
- ↑ 1.0 1.1 Motani, Ryosuke. “Eyes”. Retrieved 2007-07-06.
- ↑ “Palaeos Vertebrates: Glossary S”. Retrieved 2007-07-06.
- ↑ Pigdon, Dann. “Re: Sclerotic ring in eyes”. Retrieved 2007-07-06.
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