About The Word Aptychus
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Aptychus
| Aptychus Definition And Meaning |
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What's The Definition Of Aptychus?Synonyms | Synonyms for Aptychus: Related Terms | Find terms related to Aptychus: See Also | Aptychus In Webster's Dictionary \Ap"ty*chus\, n. [NL., fr. Gr. 'a priv. + ?, ?, fold.]
(Zo["o]l.)
A shelly plate found in the terminal chambers of ammonite
shells. Some authors consider them to be jaws; others,
opercula.
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