Harpoceras Ammonite | Germany Amethyst Split your block down gradually

Split your block down gradually — the thinner the split

during the Precambrian period

which suggests their use as a means of producing fire

semicircular cephalon (head shield) has a clearly defined glabella that narrows toward the front

Crystal is approx 6

Harpoceras Ammonite | Germany Amethyst Split your block down graduallyHarpoceras sp. Early Jurassic (180 MYO) Posidonia Shale Holzmaden, Germany Ammonite approx. size: 9" x 7. 75" Plate approx. size: 11. 75" x 10. 75" This Harpoceras ammonite from the Posidonia Shale in Holzmaden, Germany has been compressed on black slate and is partially pyritized. Ammonoids are a group of extinct marine mollusk animals in the subclass Ammonoidea of the class Cephalopoda. These mollusks, commonly referred to as ammonites, are more