![A tuatara skeleton on a black background.](http://static.sciencelearn.org.nz/images/images/000/003/363/full/5_Tuatara_skeleton_.jpg?1674170639)
The vertebrae found in a tuatara spine resemble those in fish and some amphibians, rather than lizards. Their ribs have bony processes more typical of crocodiles than lizards.
Acknowledgement: Tāmaki Paenga Hira Auckland War Memorial Museum, Creative Commons 4.0.