Article · Wikipedia archive · Last revised May 29, 2026

Ichthyolith

An ichthyolith is any disarticulated remains of a fish found in the fossil record, most often a scale, denticle or tooth. Ichthyoliths are found in nearly all marine sediment.

Last revised
May 29, 2026
Read time
≈ 1 min
Length
150 w
Citations
3
Source
Fossil found in Wyoming. source ↗

An ichthyolith (from Ancient Greek ἰχθύς (ikhthús), meaning "fish", and λίθος (líthos), meaning "stone") is any disarticulated remains of a fish found in the fossil record, most often a scale, denticle or tooth. Ichthyoliths are found in nearly all marine sediment.1

The term was coined by Doyle, Kennedy and Riedel2 (1974) to denote 'fish skeletal debris'.

The term 'stratignathy',2 proposed in the same paper for the time relationships of ichthyoliths, did not gain currency.

References

References

  1. Sibert, Elizabeth; Cramer, Katie; Hastings, Philip; Norris, Richard (March 2017). "Methods for isolation and quantification of microfossil fish teeth and elasmobranch dermal denticles (ichthyoliths) from marine sediments". Palaeontologia Electronica. 20.1.2T: 1–14. doi:10.26879/677.
  2. Doyle, Patricia; Kennedy, Grace; Riedel, W. R. (December 1974). "Stratignathy" (PDF). Initial Reports of the Deep Sea Drilling Project. 26. National Science Foundation National Ocean Sediment Coring Program and University of California Scripps Institution of Oceanography: 825–905.