Harpoceras Ammonite | Germany Amethyst For more information go to

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Split your block down gradually — the thinner the split

Megalodon was the top predator in our oceans from approximately 2-15 million years ago

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

gracefully curled stem

Harpoceras Ammonite | Germany Amethyst For more information go toHarpoceras 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