meaning of Aptychus

Aptychus meaning in General Dictionary

A shelly plate based in the terminal chambers of ammonite shells Some writers consider them become jaws other people opercula

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  • A shelly dish found in the terminal chambers of ammonite shells. Some writers think about them become jaws; others, opercula.

Aptychus meaning in General Dictionary

(letter.) A shelly dish found in the terminal chambers of ammonite shells. Some authors think about all of them is jaws; others, opercula.