Aptychus
id:
aptychus-204-11043047
title:
Aptychus
text:
An aptychus is a type of marine fossil. It is a hard anatomical structure, a sort of curved shelly plate, now understood to be part of the body of an ammonite. Paired aptychi have, on rare occasions, been found at or within the aperture of ammonite shells. The aptychus was usually composed of calcite, whereas the ammonite shell was aragonite. Aptychi can be found well-preserved as fossils but usually quite separate from ammonite shells. This circumstance led to them being initially classified as
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Aptychus
date created:
2005-05-04T20:10:02Z
date modified:
2024-09-09T22:52:25Z
main entity:
{"identifier":"Q352138","url":"https://www.wikidata.org/entity/Q352138"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/2/2f/Aptychi_examples_function.PNG","width":960,"height":720}
fields total:
13
integrity:
15