Ammonite aptychi; how to transform a jaw into an operculum?

• 1 January 1993
• journal article
• Published by American Journal of Science (AJS) in American Journal of Science
• Vol. 293  (A) , 20-32
• https://doi.org/10.2475/ajs.293.a.20

Abstract

Keywords

• AMMONITE APTYCHI
• TRANSFORM A JAW
• JAW INTO AN OPERCULUM