Cosmine

Cosmine is a spongy, bony material that makes up the dentine-like layers in the scales of the lobe-finned fishes of the class Sarcopterygii. Fish scales that include layers of cosmine are known as cosmoid scales.

See also

• Scaloid
• Dentin
• Fish scale

Further reading

• Ørvig, TOR (1969). "Cosmine and Cosmine Growth". Lethaia 2 (3): 241. doi:10.1111/j.1502-3931.1969.tb01850.x. 
• Meinke, Deborah K. (1984). "A review of cosmine: Its structure, development, and relationship to other forms of the dermal skeleton in osteichthyans". Journal of Vertebrate Paleontology 4 (3): 457. doi:10.1080/02724634.1984.10012022. 
• On the biology of cosmine