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A bit on Jacks/Carangidae and Hyperostosis

I don't have too terribly much to say, other than to share some Carangidae tilly bone pictures and information I found in a fossil book and give a little appreciation to the family of the tilly bones I found!
First, some interesting facts from "Swollen bones in jacks and relatives (Teleostei: Acanthomorphata: Carangidae)" by Bruno Chanet (https://www.researchgate.net/publication/324224115_Swollen_bones_in_jacks_and_relatives_Teleostei_Acanthomorphata_Carangidae)

  1. Tilly bones are more frequent in Cutlassfish/Trichiuridae, Drums/Sciaenidae and Jacks/Carangidae, species, but are most frequent in Jacks
  2. The bone overgrowth in jacks appears "with increasing specimen size", and so is found in larger and older fish.
  3. No one
  4. ...more ↓
Posted on June 07, 2022 05:49 by lizardking lizardking | 0 comments | Leave a comment
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About

"Tilly bones" are bones that exhibit excessive bone growth, or hyperostosis. They are named after paleontologist Dr. Johanna Gabrielle Ottelie Edinger, or simply 'Tilly'.
These over-grown bones are only found (to our current knowledge) in marine fish, though it is not known why.

Despite being a common and widely known phenomenon, they are not well understood. And they are ...more ↓

lizardking created this project on July 15, 2019
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