Hecticoceras hecticum
Ammonite
Middle Jurassic
Talheim, Germany

12mm and 8mm “golden” ammonites.

Cephalopod.

Hecticoceras is a genus of ammonite that lived during the Middle to Late Jurassic.  It is known from the Americas, Europe, India, Madagascar, and central Asia.

Here’s an affordable pair of ammonites with nice color for the novice.