Spirula (Ram's horn shell)

Thanks Despina for the extra information on this fascinating spirula! My intention was not to be rude. I'm just cleaning up the osteology mission a bit! Thank you again for your understanding!

Dear Emily, this "shell" is not actually an exoskeleton, but a small internal shell, working as buoyancy organ, and it's the only remaining of the small squid, carrying it...
But it's OK, I'll remove it from the mission.

Hi DespinaTsafetopoulou,

Would you mind removing this shell photo and any other shell photos from the Identifying Animals Through Osteology Mission? Osteology is actually the study of vertebrate bones. It's a detailed study of the structure of bones, the skeletal elements, teeth, morphology, function and disease. Osteology aids in identifying vertebrate remains with regard to age, death, sex, growth, and development. From what I understand is shells are actually exoskeletons created by marine mollusks. Thank you for your understanding! :)