Common Thresher Shark (Alopias vulpinus) - Cartilaginous Vertebral Centra

Here are a couple links to help visualize where this bone is located in the shark:
https://jeb.biologists.org/content/jexbio/210/19/3319/F1.large.jpg
https://www.flickr.com/photos/mollivan_jon/8026038814

**I have a fairly large collection of natural curiosities and decided to share some on JungleDragon. I have been collecting bits of nature for years and also have many friends who have shared things with me. Everything in my collection was ethically collected/harvested/sourced and is cruelty-free.