
1) Ear stones
Found on
https://www.crosswordclues.com/clue/otoliths

1) Earstones
Found on
https://www.crosswordclues.com/clue/otoliths

calcareous deposits or bones found in chambers at the base of the skull in fish. Sectioned, these bones often show rings or layers which can be used to determine age.
Found on
http://en.wikipedia.org/wiki/Glossary_of_fishery_terms

Oval, stone like structures within the ears of a fish or other vertebrate, which help it to maintain its balance; they are also known as ear stones.
Found on
http://english-fly-fishing-flies.s3-website-eu-west-1.amazonaws.com/glossar

Synonym: statoliths. ... Origin: oto-+ G. Lithos, stone ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: ō′tō-līths, ō′tō-līt-is Definitions: 1. Crystalline particles of calcium carbonate and a protein adhering to the gelatinous membrane of the maculae of the utricle and saccule. Synonyms: statoconia, statoconium, ear crystals, otoconia, statoliths
Found on
http://www.medilexicon.com/medicaldictionary.php?t=63982

(o;tuo-liths) Small, hardened particles of calcium carbonate in the saccule and utricle of the inner ear, associated with the receptors of equilibrium; also called statoconia.
Found on
http://www.mhhe.com/biosci/abio/glossary.mhtml

(Gk: otos=ear; lithos=stone) the internal earbones of a fish, often sectioned to show growth rings that can be used for estimating age.
Found on
http://www.seafriends.org.nz/books/glossary.htm

calcareous deposits or bones found in chambers at the base of the skull in fish. Sectioned, these bones often show rings or layers which can be used to determine age.
Found on
http://www.translationdirectory.com/glossaries/glossary245.php
No exact match found.